Blue Nile Glossary
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  Determining the predominant color of a colored gemstone, and classifying it using seven standard spectrum colors; red, orange, yellow, green, blue, indigo, or violet. For example, a green gemstone may also show a tiny bit of blue, and would be classified as vslbG, meaning very slightly bluish-Green. The dominant color is capitalized when abbreviated.

See also: Gemstone Color, Gemstone Education, Birthstone.


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