Sep 21, 2009 · A task that is extremely difficult, or requiring incredible amounts of skill or luck. The term comes from the name of a difficulty rating in downhill skiing.
Apr 03, 2022 · The diamonds certificates contain information and grades for each of a diamonds characteristics based on the 4Cs – carat weight, color, clarity, and cut quality. The final grading of a diamond has a major influence of it’s price. Along with each diamond you’re considering, you should receive and review its lab certification.
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The Diamond and Diamond Grading eLearning course brings to life the skills needed to grade the color, clarity and cut of diamonds through video, graphics, images and text. Key topics include: The influence of color, clarity, cut and carat on diamond value. Determining proportions and estimating weight.
Diamond Certification (most commonly from labs GIA, AGS, IGI, EGL, GSI, and HRD) is a document you receive from an objective 3rd party lab that describes a diamond in all of its characteristics.
The GIA (Gemological Institute of America) is the most well-respected and renowned diamond grading entity. They are incredibly consistent and provide the greatest peace of mind when purchasing any diamond.
Because diamond certificates are not created equal, the price and value of diamonds are not comparable across varying certifications. Ensure that you purchase a diamond with a certificate from a highly reputable grading entity—and that you review the diamond closely before purchase.
The price should reflect the actual quality, beauty and Cut of the diamond— both on the certificate and to the naked eye.
Diamond certification is essential for any diamond because it verifies and describes what it is you’re buying. Without a certificate from a reliable lab, there’s no way to know if the diamond you’re buying is what the seller claims. A diamond certificate includes details like the cut quality, color grade, carat weight and other characteristics. Having proof for what you’re buying is paramount, especially with such a large purchase like a diamond.
GIA has no financial stake in the sale of the diamond and evaluates diamonds on a variety of qualities and elements, including:
It’s important to note that even when an entity is consistent in its grading, it doesn’t necessarily mean the entity is reliable and trustworthy. Buying a diamond with a weak certificate at a high price point is not prudent—even if the entity consistently grades diamonds this way—because you are not getting the value for the price you’re paying.
However, when it comes to GIA certified natural black diamonds, the price can easily be $1,500-$3,000 per carat for diamonds weighing 1.00 - 3.00 carats. Meaning that a 1 carat natural black diamond ring would cost approximately $2 ,500 - $3,000.
While most colored diamonds get their color due to impurities that occur during their formation process (trying to simplify it), black diamonds are basically white colorless diamonds that have SO MANY inclusions (piques') and those are spread throughout the stone in an evenly manner so that the diamond simply appears… black.
The opaque color of black diamonds is caused by dark inclusions or, more commonly, by color treatment. Most black diamonds are treated to become a green that’s so dark it appears black, but not opaque.
Surprisingly, diamonds that have so many inclusions are not easy to find and are quite rare. But as mentioned above, these are not the ones that you usually see in stores and that people usually buy. The ones that people are wishing for are sought after also due to their low price. A price that is achieved by taking cheap white diamonds that are of extremely poor quality and literally painting them black via irradiation or heat treatments.
The fact is that most black diamonds that are on the market are not "real" black diamonds, not natural black diamonds but rather treated ones. Demand for Black Diamonds.
When it comes to the demand, it’s a bit tricky… the demand for black diamonds has gone up substantially in recent years and they became an amazingly desired fashion items. While many consumers don't even treat them as diamonds (after all brilliance is not their strong side) others adore them and wish to have them just for that. But the reason is not pure (I'll explain later)… The fact is that most black diamonds that are on the market are not "real" black diamonds, not natural black diamonds but rather treated ones.
True, they are not rare as pink diamonds or even yellow diamonds but they are not stones you can just pick up from the grounds. With that said, they are still vastly different than other colored diamonds.
Needless to say, the real appeal and value of natural fancy black diamonds are in their unique and rare color, which is only the case if they are found this way.
Unlike other color diamonds that receive their color from geological impurities such as nitrogen, hydrogen, and boron, black diamonds owe their color to the inclusion of graphite and random clustering throughout the diamond.
Therefore, the only difference between them is that black diamonds have the graphite inclusion and colorless diamonds do not. They are both formed by high pressure on the element of carbon under the Earth's surface, that produces a repeating geometric pattern in the crystal lattice. Black diamonds are completely real diamonds and almost exactly the same as colorless diamonds except for the color.
This is because many of them have been enhanced or treated, and are not nearly as valuable as Natural Fancy Black Diamonds. It is important to specify that you are looking for the rare Natural Fancy Black Diamond, and not an imitation, when you are buying black diamond jewelry from your jeweler. Assuming your jeweler is a trusted and certified professional, he will provide you with the real thing and not an enhanced version. Ask to see the GIA certificate and receive the original copy with your jewelry purchase, as you can trust that the GIA only grades natural black diamonds as an assurance of its genuineness. With the affordable prices, it is worth your while to own the real deal, which is only available at select diamond dealers.
When it comes to grading natural black diamonds, the GIA provides an Identification and Origin Report which includes the color grade (black), color origin (natural), carat weight, and diamond measurements. As it is an opaque stone there will be no mention of the make (polish/symmetry etc). 9.
Natural Fancy Black Diamonds will likely cost anywhere from $3,000 to $5,000 per carat.
As opposed to the regular colorless stones, they can also be found in Red, Violet, Pink, Blue, Yellow, Green, Orange, Purple, Champagne, Gray, Fancy White, and Fancy Black.