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www.naturallycolored.com/buying-guide/black-diamonds-value

You see, black diamonds are diamonds. As such, finding them is a hard (and expensive) task. 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.

www.worthy.com/appraisal/diamonds/black-diamonds

In order to understand the value of black diamonds, it is important to learn about how they are created. Just like standard white diamonds, black diamonds are crystalized carbon. The black color can occur if there are dark inclusions or if a white diamond is treated with radiation or high temperatures.

jewelrywiseblog.com/what-you-need-to-know-about-black-diamonds

hi im curious about our family stones found in our farm fields here in Philippines we had many stone and some people says that is a black diamondsand other color of diamonds.we gone through analysis of the stone in DAVAO MINERAL LABORATORIES, INC located in LANANG DAVAO CITY.

www.leibish.com/frequently-asked-questions-about-black-diamonds-article-563

Natural Fancy Black Diamonds, on the other hand, are found in the rough with the same black color they display when they are bought. 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. So, what does a Natural Black diamond look like?

www.gemsociety.org/article/diamond

Diamond Value, Price, and Jewelry Information Home » Gemstones » Diamond Value, Price, ... Note: these prices are for natural black diamonds. Most black diamonds on the market are treated to color. ... The International Gem Society (IGS) is the world's top resource for gem professionals, enthusiasts, and industry content. ...

kamayojewelry.com/gemstone-colors/black-gemstone-names

Black Opal. Beating diamonds for their value and price are black opals. Opals, not only reflect all colors, but come in all shades of body tone, including black. Because of the dark background, the colors diffracted by the black stones stand out quite strikingly. Unlike white opals, the black gems are among the rarest, and accordingly the most ...

www.pricescope.com/wiki/fancy-color-diamonds/black-diamonds

Cause of Color: Natural black diamonds are essentially colored by dark inclusions or impurities, which are great in number and evenly distributed throughout the stones. Many black diamonds in the marketplace are treated for even coloration and durability. Rarity: Large natural black diamonds like the Black Orlov are very rare, but irradiated ...

www.naturallycolored.com/.../what-is-a-black-diamond-are-black-diamonds-real

There are man-made black diamonds, there are natural black diamonds and there are treated black diamonds. All are real but there is a vast difference between the different types of black diamonds and if you plan on buying one, you should know that there is also a HUGE difference in value.

www.ebay.com/sch/Loose-Diamonds-Gemstones-/491/i.html?_nkw=black+diamond

Find black diamond from a vast selection of Loose Diamonds and Gemstones. Get great deals on eBay!

en.wikipedia.org/wiki/Diamond_(gemstone)

Total carat weight (t.c.w.) is a phrase used to describe the total mass of diamonds or other gemstone in a piece of jewelry, when more than one gemstone is used. Diamond solitaire earrings, for example, are usually quoted in t.c.w. when placed for sale, indicating the mass of the diamonds in both earrings and not each individual diamond.