Yellow Diamonds

Diamonds occur in a restricted variety of colors — steel gray, white, blue, yellow, orange, red, green, pink to purple, brown, and black. Colored diamonds contain interstitial impurities or structural defects that cause the coloration, whilst pure diamonds are perfectly transparent and colorless. Diamonds are scientifically classed into two main types and several subtypes, according to the nature of impurities present and how these impurities affect light absorption.

See Wikipedia, Diamond color, http://en.wikipedia.org/wiki/Diamond_color (optional description here) (as of Jan. 7, 2008, 05:27 GMT).



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