Fancy Yellow Diamond

Spotlight Gemstone: Fancy yellow diamonds

Why are Some Diamonds Yellow?

The presence of Nitrogen in a diamond usually causes Yellow colouration. This is possible when the carbon atoms in the crystal structure of a diamond are replaced by nitrogen atoms during formation. The end result changes the way the diamond reflects light. Nitrogen absorbs blue and violet light resulting in Yellow light being reflected back to the eye. Even a low concentration can result in a significant colouration.

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