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The
Color of a Diamond
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Although
most gem-quality diamonds when seen alone appear to be colorless
to the untrained eye, there are subtle differences in shade
which in turn affect value. Color in diamonds results from traces
of other elements which mix with carbon during the diamond's
formation. Diamonds with no traces of body color are extremely
rare.
To
determine a diamond's true color, the diamond is viewed
from the side under balanced white light. It is compared to
diamonds in a "Master Set" whose colors have been
predetermined by the Gemological Institute of America (GIA).
All diamonds are color graded according to guidelines established
by the GIA, using a Master Set and a special diamond light developed
for color grading. The color grade is then assigned according
to the diamond's color relative to the master set.
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