FAQs

Diamond cleaning

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Illustration on how best to clean your jewelry.

Recommendation cleaning

Clean your diamond regularly

Brush with methylated spirits (colourless) for setting and for diamond & jewellery surfaces and boiling hot water with a little soap and a very fine new toothbrush.

  • Isopropyl alcohol → for diamond & jewellery surface
  • Boiling hot water + a little soap + very fine new toothbrush

Learn more about the materials and their cleaning under Guide/Material and Cleaning.

Methylated spirits (colorless)

Colorless fuel is ideal for cleaning diamond jewelry (platinum & 18 carat gold). Because Sprit is highly degreasing, it dissolves grease, hand creams and dirt ideally. In addition, it evaporates with practically no residue and displaces water.

You can simply place your diamond jewellery in a bowl of sprit, possibly clean the surfaces and spaces gently (e.g. with a new fine toothbrush) and leave the jewellery in for a while. Then dry on a piece of paper or cloth.

In addition, you can quickly, easily and simply clean a grease-stained diamond and jewelry surface with a paper or cloth cloth soaked in fuel.

ATTENTION: is not suitable for other gemstones as these do not have the same hardness as diamonds and are often porous and sometimes contain oil as a component! Caution is also advised with metals that are not platinum or have less than 18 carats.

Hot Water & Flushing Agent

A simple plan to keep your diamond jewelry beautiful is to soak it in a gentle degreasing solution, such as water, with a few drops of mild dish soap. After removing the diamond from the cleaning solution, use a soft, clean toothbrush to remove any remaining dirt. The toothbrush should be new and used solely for cleaning your jewelry. Use them to clean hard-to-reach areas like the back of the diamond, where the most oil and dirt will accumulate.

Vinegar & salt?

Vinegar & salt is no problem at all for your diamond, which is the hardest and most resistant material (-> crystallized carbon). You can do it, but cleaning is not always that effective with it.

Professional cleaning?

Sometimes an ultrasonic cleaner is necessary to remove encrusted dirt on diamonds. A professional cleaning with ultra-sonic or an evaporation device combined with checking the «prongs» is a good idea.

Diamond properties

“blue nuance” (hue) versus “icey white” Diamonds

Blue hue diamonds have a bluish undertone. The blue hue is a hint of blue color in diamonds caused by excess boron in the diamond (similar to “Fancy Color Blue” but much less solid). Laboratory diamonds with a measurable amount of boron are considered Type IIb and not Type IIa.

How is the blue nuance created?
Boron is often introduced during HPHT growth as a means of removing nitrogen. Removing boron after it has been introduced is very difficult and expensive.

HPHT Lab diamonds may have a bluish hue due to boron impurities → noted as “blue nuance” in the evaluation reports. Mine diamonds with blue hues are rare. Most diamonds typically have a yellowish hue due to nitrogen impurities → approximately from “I” on the “I-Z” color scale of “white diamonds”. If the goal is to find a Lab diamond that visually resembles the most common mine diamonds, then diamonds with a blue hue should be weeded out.

On the other hand, bluish is a popular and rare color in diamonds.

How does a “blue nuance” affect the price?
The slower and more carefully a HPHT diamond is grown, the less likely it is to have excess boron. Diamonds without blue nuance are much more expensive to grow and fetch a higher selling price.

How does this affect the diamond, apart from the colour?

Most importantly, the presence of boron can make a diamond electrically conductive. This is also the case with “Fancy Color Blue” diamonds. This means that a certified lab diamond may show up on some cheap diamond testers as a moissanite (which of course is wrong, after all you have an official certificate which was correctly issued as “diamond” with much more expensive and precise instruments and specialists). In addition, the presence of boron can cause a laboratory diamond to exhibit a medium to strong orange phosphorescence.

3 times Excellent/Ideal in Cut & Polish & Symmetry = “Triple Ex”.

Especially for round diamonds, the expression “3 times Excellent = Triple Ex” is a technical term for absolute top class → three times the very best category (Ideal or Excellent) for cut, polish, symmetry.

“Triple Ex” are diamonds that are classified in both Cut, Polish and Symmetry with an excellent in the diamond certificate -> 3 times excellent.

Since IGI “ideal” cut grade is even slightly better than excellent, “Triple Ex” of course also applies when a diamond has an ideal cut (although the wording is not 3x excellent).

IMPORTANT: IGI’s “Ideal” = better than GIA Excellent! (though both cuts are excellent).
IGI has an additional level for Best-of-Best of Excellent = ideal.
This sometimes causes confusion as people think it has to be 3x Ex but ideal is even better.

Triple Ex stones are classified as follows:

  • ideal (better) or excellent cut
  • excellent polish
  • excellent symmetry
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Photo’s with permission of IGI “Courtesy of International Gemological Institute”.

In 1996, the IGI created the “Hearts & Arrows Diamond Report” and was one of the first laboratories to perform an optical symmetry evaluation.

Many think that the diamond cut marketed as “Hearts and Arrows” must have an Excellent cut. In fact, this cut only indicates perfect symmetry. A “Hearts and Arrows” diamond shows an arrow pattern through the plaque and a heart pattern through the pavilion. It will always have excellent symmetry. However, he will not always be excellent in other aspects of the cut.

This cut has become so popular that “Hearts and Arrows” diamonds sometimes cost more than comparable diamonds with other cuts, especially when purchased from companies that specialize in this cut. Highly symmetrical diamonds require more time to cut and waste more rough weight than other diamonds. This contributes to their price premium.

1. Bruted girdle
2. Polished girdle
3. Facetted girdle

“Bruted girdle
The girdle may be bruted, i.e. rounded by grinding against another diamond. Bruted garlands have a frosty appearance and a grainy, sugary texture. This “beardy” texture is unique to diamonds and helps distinguish real diamonds from imitations.

Some cutters believe that polished or faceted rondelles reflect the interior of the stone, so they leave stones with K color or lower rondelles.

Bruted Girdles do have one drawback, however. During rounding and sanding, feathers or tiny cracks sometimes form along the round bar.

Polished Girdle
A clear and smooth polished girdle becomes a large facet that allows the viewer to see inside the stone.

Faceted Girdle (Belt)
Faceted rondels have numerous facets along the entire edge. Today, most diamonds, especially high quality stones, have faceted borders.

Faceted diamonds are first cut. Any tiny feathers or cracks created during the grinding process are then removed during the faceting process. The production of faceted rondelles therefore takes more time and may result in a slight loss of weight. However, they do give the diamond a cleaner, more finished look.

The rondelle itself is usually not visible to the naked eye unless the diamond is extremely large or the rondelle is unusually thick.

Bowtie effect (black shadow in the middle)

The bowtie effect is a black “stripe” through the center half of certain diamond cuts = shadows inside the diamond , created when light casts a shadow on the central facets. The reason for this is that it’s hard to avoid when cutting elongated shapes – their center sections are too long, and it can be difficult to grind the facets there to properly reflect the light. This black streak is not due to any particular chemical coloring inside the stone, nor is it due to any particular inclusion. It also has nothing to do with “light leakage” through the sides of the stone, which is one of the more common problems with diamonds.

The diamond bowtie effect is not always pitch black. Many loops are just slight shadows in the center of the stone that are barely noticeable. Almost all marquise, oval and pear shape diamonds have at least some loops, but they are often simply seamless and not as obvious. Some square shapes like the beam cut may also show loops.

Certain loops are even considered positive – if the loop effect is not too pronounced, and if the cutter has shaped the stone well around it, the loop can even add a certain sparkle to the stone and enhance its sparkle.

The presence of a “bowtie” is not listed in the report of a diamond. It’s important to note that a diamond bow tie is not necessarily a flaw – many fancy cuts will show some signs of a bow tie due to their complex faceting.

It’s all about your personal taste!

Unfortunately, when most people look at a diamond, the carat size usually makes the biggest impression. In reality, the cut has a big impact on how big a diamond appears and the light pattern it shows. It also largely determines its brilliance – how much light it returns – and its dispersion – how much inner “fire” it shows. If the cut is done poorly, it can ruin these most valuable aspects of diamonds – not something you want!

These days, most diamonds are cut with lasers, so most diamonds should fall in the Very Good to Excellent range.

The only reason diamonds ever have a less than excellent cut is because the diamond cutter is trying to save weight. Cutting diamonds is usually a compromise between saving weight and maintaining good brightness, pattern and symmetry.

A diamond with a larger carat size simply fetches a higher price, even though it has a slightly lower cut grade. In other words, although a diamond with a lower cut grade will drop slightly in price, a larger carat size will more than make up for that deficit. However, if the cut is so poor that the diamond looks dumpy, its value would be diminished.

CAUTION: If you buy a stone with a less than excellent cut, you may have bought a thick stone that hides the weight but does not appear larger compared to smaller or equally sized stones. In addition, a poorly cut stone may also have less brilliance and fire than a comparable well-cut stone.

Recommendation: “ideal” & “excellent” (for round white diamonds), at least “very good”.

The cut is the most important criterion, more important than Polish & Symmetry!
Poorly cut diamonds can appear lackluster.
Cut contributes directly to the appearance of a diamond because it describes:???????

Green World Diamonds AG

Yes!

We sell only lab diamonds (white and fancy color).
Also called: Lab diamonds, lab grown diamonds, laboratory-created diamond, lab diamond, man-made diamond.

Diamonds of the Future

  • SWISS Made top quality jewelry
  • Swiss pioneer & expert in Laboratory Grown Diamonds
  • REAL diamonds (official certificates IGI, GCAL, GIA, etc.)
  • Our Lab Diamonds are chemically, physically & optical identical to mined diamonds.
  • Up to 70% cheaper than mined diamonds
  • Affordable colored diamonds (Fancy Color Diamonds)
  • More sustainable & environmentally friendly, social & ethical
    (ESG; SUSTAINABILITY)

Sometimes erroneously also called “synthetic”.
Synthetic is incorrect because crystallized carbon (which all diamonds are made of both lab diamonds and mine diamonds) is a naturally occurring substance on earth and nothing synthetic. In addition, there is a decision on this by the U.S. FTC.

Although with very small stones, e.g. 2mm, the work is more significant and the market/supply/availability of mine diamonds is greater (at least for the moment), we have decided to work exclusively with lab diamonds because of sustainability, environmental friendliness, sustainability, ethics and social aspects.

More diamond for your money (bigger, better quality)!

Sustainable, environmentally friendly, ethical and social!

Everyone who loves diamonds and wants to get more for their money, whether rings, earrings, necklaces or bracelets. Engagement rings are popular because even larger stones are affordable. Colored lab diamonds are also in demand, as those from mines are almost prohibitively expensive.

Many of our customers today value environmental friendliness and ethics, which is why they choose our products.

In addition, foreign customers in particular appreciate “Swiss Made”.

We also sell loose diamonds directly to jewelers (B2B).

1) 1st Mover, pioneer & expert
We are the first in Switzerland offering laboratory diamonds.

Direct from diamond labs => we are wholesalers (WHOLESALER)!
We source our diamonds worldwide and directly from the best laboratories in the world.
Excellent quality!
We know which producers have the best diamonds.
We know the different labs and their strengths (large stones, fancy color, melee, shape, cut, quality,
after-treatments, prices, etc.).

B2B: We also sell Lab Grown Diamonds to jewelers.

2) Very attractive prices
Lab diamonds are much cheaper than mined diamonds, up to 70% cheaper.

3) Sustainability
We are sustainable and ethical from A-Z:
-> Sustainable lab diamonds (many of our suppliers work with renewable energies e.g. solar)
-> sustainable wooden jewelry boxes
-> sustainable packaging

4) Swissness
Swiss company
Swiss quality products (jewelry)
“Swiss Made” Made in Switzerland
Our designers, goldsmiths, stone setters (InHouse) and atelier are in Switzerland

5) Top quality
Luxury brand with excellent quality throughout: lab diamonds, jewelry, packaging, etc.

We are Swiss pioneer and expert in lab diamonds. We source our diamonds directly globally from the best laboratories in the world. We are wholesalers. We know which producers have the best diamonds, where which laboratory has its strengths. We have the expertise which growing methods are best for what and for which diamonds – size/color/cut – which lab is best. Our diamond jewelry is eco-friendly, sustainable and ethical. Lab diamonds have a massively better carbon footprint than mine diamonds. Our jewelry boxes and packaging materials are also made of environmentally friendly materials. Our designers, goldsmiths and stone setters are in our studio in Switzerland. We place the highest value on excellent quality “Swiss Made”. We work with the most modern technologies such as CAD-3D computer visualization. We are a Swiss luxury brand with attractive prices!

Buy diamonds

The fact is that diamonds are ideally suited for online trading / e-commerce!

Official certificates of gemmological laboratories:
With no other gemstone do you have such an exact description and classification of the diamond with the certificates issued by independent gemmological laboratories.
→ it can be said very precisely what kind of stone this is.

Videos:
With the videos you get on the mobile phone (-> smaller picture) a very good impression of the form, brilliance, sparkle and the color of the diamond and on the PC (-> larger picture) you see the stone in X-fold enlargement very exactly. E.g. seeing imperfections in clarity and how good the diamond is. You will also be able to see polishing imperfections in a diamond with a lower polish grade.
It is a misconception to think that you can see more with the naked eye in a shop with optimal lighting.

Selection:
We work directly with the best laboratories and can find the perfect stone for you from a wide selection.

Cost:
We have low operating costs (no expensive shop, employees etc.) and can offer you extremely attractive prices with a large selection.

Advice & Expertise:
You are not alone with the choice – we are happy to advise you. We have a lot of expertise, experience and know-how!

Trust & Seriousness:
Trust is very important, especially in this industry. As an ex-banker, I am used to taking responsibility for my clients’ investments/assets and always acting very conscientiously and in the client’s best interests. That’s how we feel about Green World Diamonds. We want satisfied customers who stay with us for many years and recommend us…

More valuable: The freer of inclusions (better clarity), the more valuable the diamond.

✓ Investment: Top quality diamonds are preferred as investments.

✓ better for large diamonds: The larger the diamond, the more likely you are to see inclusions

Incredibly rare, flawless and internally flawless stones make up only 2% of gem quality diamonds. Therefore, they fetch high prices, especially in large carat sizes.

You will notice a huge price difference between an IF stone and a VVS stone. As purity levels go down, price differentials decrease exponentially.

Very Very Slightly Included (VVS):
VVS stones have tiny inclusions that are so small that they are barely visible under 10x magnification. Most consumers probably can’t tell the difference between F, IF and VVS diamonds.

Every stone in the VVS range still has extremely high purity and fetches a top price.

Diamonds with the grade VVS1 and VVS2 have an excellent clarity.

The imperfections in VVS diamonds are only visible under high magnification. Even a jeweler’s loupe is sometimes insufficient to see these imperfections.

Big diamonds:
The larger the diamond, the more likely you are to see inclusions, especially if they are in the center of the diamond, under the table. The tablet is the large facet at the very top of the diamond where most of the light enters the stone.

The larger the stone, the more visible the inclusions, simply because you have more surface area to look at. Look for stones much larger than one carat to have a clarity grade of VS or higher. For stones of one carat or less, VS or even SI grades are the standard. For small stones (under half a carat), clarity is not as important. The color grade is more striking.

Clarity is an important consideration when you are looking to buy a diamond. At the upper end of the purity scale, though not quite at the top, are VVS1 diamonds (very very slightly included). These are considered to be of excellent purity and are correspondingly more expensive (whereby with the rennet diamonds the price difference becomes greater to the advantage of the rennets the purer the stone is → it is therefore worthwhile 😉

When it comes to buying a diamond, the cut is probably the most important of the four C’s. A good cut brings out a fire and brilliance that can offset (and even hide) flaws and coloration.

Nevertheless, clarity can also have an impact on the beauty of the diamond you choose. Inclusions affect the way light reflects from the diamond back to you. The more inclusions, the less fire and brilliance a diamond will have.

When looking at diamonds, make sure you are magnifying them to see flaws and inclusions → video on PC.

What does the purity VVS1 mean?
Diamonds are graded on a clarity scale that measures how clear the diamond is and how many flaws or inclusions the diamond has, both internally and externally, when viewed at 10x magnification. Flaws and inclusions can be anything from small cracks or chips on the surface of the diamond to tiny crystals that were embedded when the diamond was formed.

It is quite difficult to find a diamond completely without a flaw. Even FL diamonds that are considered flawless can have flaws when viewed under high enough magnification.

VVS diamonds, whether VVS1 or VVS1, are very, very easily included. Despite some inclusions, these diamonds are considered to be of excellent clarity.

Remember that jewelers grade diamonds by clarity by looking at them under 10x magnification. So although flaws may be visible under magnification, a diamond (especially a VVS diamond) is most likely what is called eye clean.

This means that the diamond looks flawless to the naked eye. A VVS1 diamond will definitely look flawless even if you turn it in the light.

Very Slightly Included (VS) = “eye clean”:
VS stones are in the upper to middle range of diamond clarity grades. They have minor inclusions, which means that they do not affect the purity much, even if they are larger or more numerous than in VVS stones.

Although VS diamonds have a lower clarity grade, you cannot see their imperfections with the naked eye.

In addition: The inclusion types, inclusion location, inclusion frequency, etc. is different.

→ we help you find a “top VS diamond”.

Slightly Included (SI):
SI stones fall into the commercial grade. The inclusions are visible at 10x magnification, but most likely not to the naked eye. But “eyeclean” cannot be guaranteed. Still, an SI stone can appear duller and less brilliant, especially to someone familiar with fine jewelry.

Included (I):
In general, it’s not a good idea to buy I stones, even if they are technically gem quality. I diamonds have inclusions that are visible even to the naked eye. Furthermore, these inclusions can even affect the durability or wearability of the diamond, especially with I3 stones.

Especially with “white diamonds” is 1 carat is a very decisive value/price limit.

Stones below are worth massively less.

→ We therefore recommend for white diamonds to be over 1 carat for the “centerstone”/main stone.

With Fancy Color diamonds it is different, here even stones under 1 carat can be very valuable.

→ We recommend for the “Centerstone”/main stone to be over 0.5 carat.

Recommendation: “bigger is better”, “size matters”, big is beautiful.

“MAGIC SIZES:

  • 0.5
  • 0.75
  • 1 carat

Visually, there is hardly any difference between a 0.99-carat and 1.00-carat diamond.

→ But: usually considerable price difference!

They are called “magic sizes” because the price “magically” jumps once it reaches 1 carat and other large fractions, mainly every 1/4 carat.

Large gemstones are much rarer than small ones, which makes large diamonds much more valuable

Diamond prices increase exponentially with carat weight.

Thus, a 2-carat diamond of a certain quality is always worth more than two 1-carat diamonds of the same quality.

I.e. the price per carat (carat price) is usually a lot higher for a 2 carat than for a 1 carat.

Yes! There was an important change in the law in the U.S. in July 2018 by the U.S. Federal Trade Commission (FTC) this states “diamond = diamond”, regardless of origin, whether from the lab or from the mine. Furthermore, today the most prestigious international gemological laboratories (IGI, GCAL, GIA) certify lab diamonds with the same classifications, the 4 C’s, as mine diamonds.

Lab diamonds are up to 70 percent cheaper than mine diamonds. For colored diamonds – Fancy Color Diamonds yellow, blue, pink and others – the price differences are even greater. Another advantage is that lab diamonds are more sustainable, environmentally friendly, social as well as ethical from their conflict-free origin. They are guaranteed not to be blood diamonds.

Main reasons in favor of Lab Grown Diamonds

  • genuine diamonds (official certificates IGI, GCAL, GIA, etc.)
  • Our lab diamonds are chemically, physically & optical identical to mined diamonds.
  • up to 70% cheaper than mine diamonds
  • affordable colored diamonds (Fancy Color Diamonds)
  • Sustainable & Environmental & Social/Ethical (ESG; Sustainability)

→ the question is not why buy a lab diamond, the question is why NOT to buy a lab diamond and a mine diamond?!

…diamond = diamond. This was defined by the FTC (USA Federal Trade Commission) in July 2018.

All diamonds consist of pure cubic crystallized carbon.

Chemically, physically, optically, lab diamonds are the same as mining diamonds.

Both are 100% pure crystallized carbon.

Difference: origin laboratory versus mountain mining. Lab diamonds are 100% genuine, cheaper, more sustainable and more ethical. We see no reason not to buy a lab diamond.

No problem!

We have various solutions for you!

  1. Multisizer & ring dipstick (ring available) & ring size models
  • With the multisizer (plastic knife) you can measure the finger. ATTENTION: remember, the ring must go over the knuckle “Knödli” (i.e. don’t just lace it to the back of your finger and read off the number, but make sure the plastic ring is tight to the knuckle but still goes over it).
  • You have a ring for the finger you want? With our ring gauge we can easily determine the size.
  • Metal rings for size measurement can be used well if there is the possibility to try on this metal ring.
  1. Plastic model with zirconia

You are not sure 1) about the size or 2) about the design? No problem, with us you have the possibility to have plastic models made before the production of your piece of jewellery.

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Almost all women and men love big diamonds. That’s why real lab-grown diamonds are ideal!
=> You get more diamond for your money.

  1. First, optimize the size (carat / carat):
    “bigger is better”, “size matters”…this is the most obvious specification that you are often asked about and everyone knows….
  2. In the 2nd step, select the Shape / Form:
    Round, Oval, Emerald, Heart etc.
  3. Only in the 3rd step select the color (Color), purity (Clarity), etc.

We will be happy to advise you → contact us.

Should I buy a diamond as an investment as a capital investment?

Diamonds are known as an investment, this goes way back in history.

Top qualities in terms of color and clarity are preferred as an investment.

Also, larger diamonds are more interesting as an investment (more carats).

“Fancy Color” diamonds are also popular investments.

A diamond will certainly always fetch a certain price. Not like a zirconia that goes straight down to zero after purchase. And of course, a real diamond is a beautiful thing/jewelry to enjoy.

Whether it is a good investment depends on the price development. This question arises equally for lab diamonds as well as for mining diamonds.

Lab diamonds are expensive to produce. Therefore, they will always have some value!

Lab diamonds also have a secondary market, so there are definitely lab diamond buyers. You can also sell your Lab diamond to a private person, you have all the official certificates.

Lab diamonds also have price fluctuations on both sides. Exactly the same as mining/mining diamonds.

Of course, the question of resale price also arises for mine diamonds.
Should the diamond prices drop in general, e.g. both types drop -10%. Then you will lose the same amount in percent% with Lab diamonds, but in absolute terms (i.e. Dollars) you will lose less money than with mine diamonds because the price of Lab Grown diamonds is lower.

→ in this scenario you would be better served with the Lab diamond.

In our opinion, the price difference between Lab diamonds and mining diamonds is too large (i.e. Lab diamonds are too cheap) and we rather expect prices to converge (i.e. Lab diamonds could become more expensive for example if the demand for Lab diamonds increases).

→ in this scenario you would be better served with the Lab diamond.

The first question you should ask yourself is: what look/charisma do you want? Brilliant sparkling or prefer cool clear icy look? Maximum sparkle or a special shape?

3 diamond cut types:

  • Brilliant cut → the most sparkle due to their ideal facet pattern
  • Step cut not as much sparkle, but are appealing because of their style
  • Mixed grinding

Charisma:

  • Brilliant sparkling diamonds (brilliant or mixed cut)
    • Round (= Brilliant)
    • marquise
    • Heart
    • Pear
    • Cushion (= Cushion modified Brilliant)
    • Radiant (= Cut-Cornered Rectangular modified Brilliant)
    • Oval
    • Princess
  • Cool clear icy look (step cut)
    • Emerald
    • Asscher (= square Emerald)

If you want a “sparkle & brilliance” to it: ideal to combine: Eternity ring with many small sparkling diamonds to it.

Do sharp corners and edges bother you? If so, we recommend:

  • Round
  • Oval
  • Cushion
  • Emerald & Asscher (if cool clear icy look desired)

You can’t go wrong with a round diamond (= brilliant). They sparkle the most and are the best selling shape. They are classic, timeless and never go out of fashion.

In addition, round diamonds are also cut/cut graded, so you can tell quite accurately if this is a “good” stone or not.

From very large sizes, e.g. 10 carat (14mm = 1.4cm diameter), it may be that the round shape is too wide for the ring on your finger and therefore an oval shape is more beautiful.

IGI Cut Grades -> is “ideal” better than “excellent”?

Yes! IGI has made an additional higher category for the top-of-top stones of excellent = ideal.

Ideal = Top cut grade from IGI, which is higher than excellent.

At GIA the highest cut grade is excellent and corresponds to the IGI excellent.
The five criteria that IGI primarily uses to grade the cut of a diamond are: Total Depth, Girdle Thickness, Pavilion Depth, Crown Angle, and Table Width.

IGI CUT Grades GIA CUT Grades
Ideal
Excellent Excellent
Very Good Very Good
Good Good
Fair Fair
Poor Poor
IGI and GIA cut classifications

IMPORTANT: IGI’s “Ideal” = better than GIA Excellent.

IGI has an additional level for Best-of-Best of Excellent = Ideal.

Whereas both ideal & excellent are really excellent!

If a diamond has an identification number, it is engraved here by laser. The Inscription is like the social security number of the diamond. It identifies the diamond and assigns it to a specific grading report.

We think that the massive price difference of about 70% between mined diamonds and lab diamonds cannot be sustained in the longer term. Since both are identical products (chemically, physically and optically), theoretically the price difference cannot be justified anyway.

Due to the ecological footprint, it would also be conceivable that in the future lab diamonds might even become expensive.

We see the risk of mining diamond prices falling/correcting as very high.

Due to a strong increase in demand for lab diamonds, prices here could rise because the global supply is currently still small due to capacities and cannot be increased massively so easily.

→ it is a 100% real diamond

→ also crystallized carbon

→ chemically, physically and optically identical to mine diamonds

→ state-of-the-art technology with expensive machinery and entire technicians and engineering teams.

→ It takes several weeks, usually months, sometimes even years for a lab diamond to grow.

→ the rough diamonds, like mine diamonds, must also be elaborately and perfectly polished

→ Certifications by renowned, internationally recognised gemmological institutes (certification companies)

→ we have our lab diamonds exclusively from the best laboratories worldwide

Transport & insurance etc. is important and not quite simple and expensive.

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Photo with permission of IGI “Courtesy of International Gemological Institute”.

The grading report of a diamond is like its identity card. Gemologists can confirm a diamond’s identity based on its cut angles, clarity flaws, and girdle inscription.

The report will also tell you if a diamond was mined from a mine or produced in a lab, or if it has undergone treatments. In combination with the four Cs (color, clarity, cut and carat) you can determine the quality of the diamond.

A diamond grading report gives you peace of mind that the diamond you pay for is the one you get.

The cut proportions and clarity characteristics act as a sort of “fingerprint” for your diamond, allowing others to confirm that it is the same diamond on your report.

Laser engraving with number on the girdle of the diamond

All Green World Diamonds (except the very small diamonds) have a laser engraving with a number (girdle/belt inscription with the report number) you can read this number with a magnifying glass on the diamond girdle and this is also written on the certificate. This gives you optimum certainty and security.

The certificate also states that it is

  1. is a real diamond “Diamond”
  2. is a Lab diamond
  3. whether it was bred with HPHT or CVD

ATTENTION with “own certificates” = brand or shop diamond grading

Some brands/sellers have their diamonds graded internally instead of sending them to an outside gemological lab. While a few are remarkably consistent, like Tiffany & Co, most have somewhat loose standards → uncertainty about quality (Color, Clarity, etc.)!

Origin of the diamonds (laboratory or mine)

✓ Lab diamonds are 100% real real diamonds!

✓ crystallized carbon
-> Pure Carbon of which both lab diamonds and mine diamonds are made of

✓ Lab diamonds are chemically, physically and optically identical to mine diamonds
(this is also stated on the Lab Grown Diamond certificates).

✓ official certificates from independent certification companies (gemmological laboratories) such as IGI, GCAL, GIA, etc.

Yes! Lab-produced diamonds are real diamonds, identical in every way (except price!) to diamonds mined from mines. The labs crystallize carbon into stunning rough diamonds, which are then cut, polished and graded just like diamonds mined from the earth. Those produced in the laboratory have identical chemical, physical and optical properties. They have the same refractive index, dispersion and hardness and are graded by leading independent gemological institutes to the same standards as mine diamonds.

Diamond = diamond (regardless of origin)

Important July 2018 U.S. Federal Trade Commission (FTC) Legislative Change:

“Lab grow diamonds” = diamonds, so do “(natural) mine diamonds”. The FTC says: A diamond is a diamond regardless of its origin . “a diamond is a diamond” no matter of it’s origin.

… “removed a section on misleading illustrations, and eliminated the word “natural” from the definition of diamond in section 23.12(a)”….

https://www.ftc.gov/news-events/blogs/business-blog/2018/07/diamonds-pearls-revisions-ftcs-jewelry-guides

-> YES!

Diamonds are a fashionista’s best friend – but the definition of the precious gemstone is changing thanks to new, emerging jewelry technology.

Not only are the prices of rennet diamonds lower than mine diamonds but the ethical sourcing and sustainability is slowly but surely making this trend mainstream. So it’s also becoming increasingly popular with celebrities, influencers and consumers. With the proliferation of Lab diamonds, more and more celebrities are also wearing these pieces of jewelry on the red carpet – many of whom are eco-friendly activists and human rights advocates.

Examples of stars with Lab diamonds:

  • Drake: 2022 Drake (Mr. Champagne Papi) wears a 2 Mio Lab-Diamonds necklace designed by FRANK OCEAN
  • Leonardo DiCaprio: Investor in lab-diamond technology
  • Lady Gaga: September 2018 the London premiere of “A Star is Born”: cluster earrings made of three freshwater pearls and nine brilliant-cut lab diamonds
  • Emma Watson: 2018 at the Academy Awards afterparty of the Vanity Fair Oscars: multitude of ethically made accessories with lab diamonds
  • Meghan Markle: January 2019 at an event in London: yellow gold lab diamond earrings
  • Camila Mendes: November 2018 People’s Choice Awards: 5-carat pink lab diamonds set on a 14-carat gold band
  • Bindi Irwin (daughter of the late crocodile hunter Steve Irwin; conservationist): July 2019 engagement ring: it contains a Lab diamond and is made of rose gold. Chandler was incredibly thoughtful when he chose it, the ring captures the essence of who I am (with its vintage flair).
  • Zoe Kravitz: 2019 Met Gala: A pair of dazzling earrings. The statement jewelry featured a feathered design accented by pearls and lab diamonds
  • And many more stars….

1. difference: origin of laboratory versus mining

The difference between lab-grown and mine diamonds could be compared to the difference between ice that forms outside on a winter day and ice that forms in your refrigerator. Since mine diamonds are ancient, a more apt comparison might be between ice from an ancient glacier and ice from your refrigerator. But either way, both are ice. Both are frozen H 2 O, regardless of origin.
Lab diamonds are chemically, physically and optically identical to mine diamonds!

2nd difference: growth morphology in a rough diamond
However, → is irrelevant for the polished diamond (because the “inner” is identical).

✓ Growth morphology in rough diamonds does NOT play a role for polished diamonds!

Where Lab diamonds differ from mining diamonds is the growth morphology in rough diamond: Mining diamond → Octahedron (like 2 pyramids together), HPHT → Cuboctohedron (sphere like honeycomb shape), CVD → Cube. But both are on the inside, namely in a cut diamond/brilliant, not able to be differentiated from each other! → irrelevant!

Yes! In the cultivation of lab diamonds, natural conditions are imitated.

HPHT = ✓ conditions analogous to those in the Earth’s deep interior

CVD = ✓ conditions analogous to interstellar gas clouds.

During this “growing process” the exact same inclusions can occur as with mine diamonds.

The inclusion types of lab diamonds are also found in mine diamonds. So they are not different/different types of inclusions. Only: a few mine diamonds have so-called “natural inclusions”. Analogous to a mosquito in an amber. Such inclusions do not occur in lab diamonds in the “clean” lab environment.

Still, Lab diamonds often even a better color and purity (= quality). Partly Lab diamonds are even harder than mine diamonds because of a better “compression”. Nevertheless, inclusions also occur in rennet diamonds.

We also have the impression that with lab diamonds from the best laboratories with excellent quality, the inclusions are often very local and the “rest” of the diamond is “crystal clear”, whereas with mine diamonds, small inclusions can often be observed throughout.

No. Even experts with common instruments and diamond detectors, UV light, magnifying glass etc. are not able to tell the difference.

Lab-grown diamonds are identical in appearance to mine diamonds (visually identical)!

✓ traditional gemmological observations and old style “diamond detectors” are NOT able to distinguish them

In order to detect possibly very subtle differences in growth morphology, gemological institutes had to develop extremely expensive and complex equipment specifically for this purpose.

Certification laboratories try with special very expensive and complex machines and specifically trained experts (specially trained gemologists) to assign the difference by means of growth morphology (which is irrelevant in the cut diamond) and here more common fluorescence patterns under the UV light.

But even that is extremely difficult!

Moreover, even if growth patterns should be detected, it does not change the fact that “diamond = diamond”, it is a real diamond with the same material (crystallized carbon, pure carbon), the same chemical composition (chemically, physically and optically identical) and the same crystal structure as a mine diamond.

How do the certification companies manage to identify Lab-Diamonds as such?

As you can see, it is extremely difficult to make this distinction even for extremely well and very specifically trained experts who have specially developed equipment.

They try to categorize the morphology of diamonds using a diagram that lists the growth process, typical growth morphology and visual examples of mine, HPHT and CVD rough diamonds.

This diagram shows the different rough diamonds based on their growth form, or growth morphology. Although this shape is lost after a diamond has been cut and polished, identification is still possible by looking for fluorescence patterns (under the UV light) resulting from, among other things, the particular growth morphology – a difficult task!

As a rule, the cut diamonds are sent to the certification companies already declared as “lab grown”.

In the growing process, the natural growth

  1. in the deep interior of the earth (HPHT) or
  2. in interstellar gas clouds (CVD)

is mimicked or imitated. The crystallization of the carbon takes place over months, depending on the size.

Subsequently, the grown rough diamond is cut, polished and cut by a diamond cutter.

LGD = Lab Grown Diamond.

What is a Lab Grown Diamond?

A “Lab Diamond” is a man-made diamond that has been grown in a laboratory environment by one of the two currently available manufacturing processes: HPHT (High Pressure High Temperature) and CVD (Chemical Vapor Deposition). All real diamonds consist of pure crystallized carbon (pure carbon); this applies to both mine diamonds and lab diamonds. The growing process mimics/imitates natural growth in the deep interior of the Earth (HPHT) or in interstellar gas clouds (CVD). Although the growth process is different from what occurs in nature, the chemical composition, physical properties, and optical characteristics of lab-grown diamonds are identical to those of diamonds mined/extracted from mines. Lab-grown diamonds come in all sizes (currently up to over 10 carats), all shapes and all colors, and the light output is identical to that of mined diamonds.

Also called: Lab diamonds, lab grown diamonds, laboratory-created diamond, lab diamond, man-made diamond, green diamond, green diamonds.

For more on the difference between lab and mining/mining diamonds, click here.

CVD (Chemical Vapor Deposition)

A CVD diamond (Chemical Vapor Deposition) is a grown laboratory diamond (Lab Grown Diamond), a real diamond made of crystallized carbon. It is chemically, physically and optically identical to mine diamonds. At Green World Diamonds you get certificates from renowned gemmological laboratories like IGI, GCAL, GIA etc.

There are white and colored CVD diamonds (White and Fancy Color Diamonds).

In CVD synthesis, microwaves split the hydrocarbon molecules fed into the reactor. These fragments migrate downward to the colder diamond nucleus and attach to the growing diamond surface. The Lab diamond grows in thin layers, and its final thickness depends on the time available for growth. The result is flat, tabular crystals (similar to a cube) whose outer surface is coated with black graphite.

✓ Analogous conditions of interstellar gas clouds (how cool is that?)
✓ Vacuum chamber
✓ Approx. 1’000° Celsius (high temperature, lower than HPHT)
✓ Microwave beam

A “Lab Diamond” is a man-made diamond that has been grown in a laboratory environment by one of the two currently available manufacturing processes: HPHT (High Pressure High Temperature) and CVD (Chemical Vapor Deposition). All real diamonds consist of pure crystallized carbon (pure carbon); this applies to both mine diamonds and lab diamonds. The growing process mimics/imitates natural growth in the deep interior of the Earth (HPHT) or in interstellar gas clouds (CVD). Although the growth process is different from what occurs in nature, the chemical composition, physical properties, and optical characteristics of lab-grown diamonds are identical to those of diamonds mined/extracted from mines. Lab-grown diamonds come in all sizes (currently up to over 10 carats), all shapes and all colors, and the light output is identical to that of mined diamonds.

Also called: Lab diamonds, Lab Grown Diamonds, laboratory-created diamond, lab diamond, man-made diamond, green diamond, green diamonds.

More about the CVD Growing process and procedure of CVD Lab Grown diamonds can be found here.

HPHT (High Pressure High Temperature)

A HPHT diamond (High Pressure High Temperature) is a Lab Grown Diamond, a real diamond made of crystallized carbon. It is chemically, physically and optically identical to mine diamonds. At Green World Diamonds you get certificates from renowned gemmological laboratories like IGI, GCAL, GIA etc.

There are white and colored HPHT diamonds (White and Fancy Color Diamonds).

In HPHT synthesis, a press applies extremely high pressures and temperatures to a central growth chamber containing the necessary ingredients. This results in lab diamond crystals with combinations of cubic and octahedral faces. Similar to a honeycomb structure with squares.

✓ Analogous conditions deep earth interior
✓ Approx. 1’500° Celsius (extremely high temperature)
✓ 400 tons per square inch (extremely high pressure)

A “Lab Diamond” is a man-made diamond that has been grown in a laboratory environment by one of the two currently available manufacturing processes: HPHT (High Pressure High Temperature) and CVD (Chemical Vapor Deposition). All real diamonds consist of pure crystallized carbon (pure carbon); this applies to both mine diamonds and lab diamonds. The growing process mimics/imitates natural growth in the deep interior of the Earth (HPHT) or in interstellar gas clouds (CVD). Although the growth process is different from what occurs in nature, the chemical composition, physical properties, and optical characteristics of lab-grown diamonds are identical to those of diamonds mined/extracted from mines. Lab-grown diamonds come in all sizes (currently up to over 10 carats), all shapes and all colors, and the light output is identical to that of mined diamonds.

Also called: Lab diamonds, lab grown diamonds, laboratory-created diamond, lab diamond, man-made diamond, green diamond, green diamonds.

More about the HPHT Growing process and procedures of HPHT Lab Grown diamonds can be found here.

A “Lab Diamond” is a man-made diamond that has been grown in a laboratory environment by one of the two currently available manufacturing processes: HPHT (High Pressure High Temperature) and CVD (Chemical Vapor Deposition). All real diamonds consist of pure crystallized carbon (pure carbon); this applies to both mine diamonds and lab diamonds. The growing process mimics/imitates natural growth in the deep interior of the Earth (HPHT) or in interstellar gas clouds (CVD). Although the growth process is different from what occurs in nature, the chemical composition, physical properties, and optical characteristics of lab-grown diamonds are identical to those of diamonds mined/extracted from mines. Lab-grown diamonds come in all sizes (currently up to over 10 carats), all shapes and all colors, and the light output is identical to that of mined diamonds.

Also called: Lab diamonds, lab grown diamonds, laboratory-created diamond, lab diamond, man-made diamond, green diamond, green diamonds.

For more on the difference between lab and mining/mining diamonds, click here.

Lab diamonds have at least the same durability as mine diamonds, often they are even more compacted i.e. harder than mine diamonds and therefore even get the better durability.

Lab diamonds often have better color & clarity & hardness than mine diamonds

Although the FTC says diamonds are essentially pure carbon, the vast majority of mine diamonds contain trace amounts of other substances, notably nitrogen, which gives them a yellow color, or (rarely) boron, which gives them a blue color. In addition, they usually contain inclusions, tiny foreign bodies that were trapped in the still-forming diamond millions of years ago.

→ Lab diamonds therefore have often even a better color and purity (= quality). Partly Lab diamonds are even harder than mine diamonds because of a better “compression”. Nevertheless, inclusions also occur in lab diamonds. The inclusion types of lab diamonds are also found in mine diamonds. So they are not different/different types of inclusions. Only a few mine diamonds have so-called “natural inclusions”. Analogous to a mosquito in an amber. Such inclusions do not occur in lab diamonds in the “clean” lab environment.

Lab diamonds are made of crystallized carbon (pure carbon), which is also what mine diamonds are made of. In addition, Lab diamonds have the same atomic lattice structure (cubish).

Our lab diamonds have identical chemical, physical and optical properties.

What more could you want?
Same material, same atomic lattice structure – optically, chemically and physically identical!