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Black Diamonds

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fali

Rough_Rock
Joined
Oct 11, 2002
Messages
13
Just out of curiosity how do black diamonds get their colour? Where can I find more information about them.

Thanks
 

pricescope

Ideal_Rock
Joined
Dec 31, 1999
Messages
8,266
----------------
...how do black diamonds get their colour?
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Carbon! :)

check these links:

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Richard Sherwood

Ideal_Rock
Joined
Sep 25, 2002
Messages
4,924
The majority of black diamonds you see on the market are irradiated. Some of the ones I've examined looked black to the eye, but when examined under a high intensity fiber optic light were actually a very, very dense green of low color saturation. This highly concentrated low saturation green ends up looking black under ordinary lighting conditions.

Natural blacks can range from semi-transparent to opaque. Sometimes a heavily included natural diamond can have a black "appearance", although not be a true "fancy" black. Fancy blacks are, however, often heavily included.

A new development on the market are synthetic black diamonds. They are opaque, with a "hematite-like" look. They are purported by their marketers to have a better grain "texture" than natural blacks, and "allegedly" take a better polish. These stones sell for less than natural blacks.

Black diamonds can range quite a bit in price. The majority of them are fairly homely, but sometimes the finer ones can catch your eye. They are kind of cool from a mineral specimen point-of-view, and many regard them as a good man's ring stone.

Rich, GG
Sarasota Gemological Laboratory
 

fali

Rough_Rock
Joined
Oct 11, 2002
Messages
13
Thanks for all the info.

I have seen quite a few pieces featuring black & white diamonds. I had never heard of black diamonds before.

Thanks again, this site is the best.
 
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