Blue Nile Glossary
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Index
  The colour scale is used to describe the colour present within a diamond or gemstone. These colours have been established by expert gemmological laboratories, and are carefully scrutinized against a master set of diamonds.

For diamonds, the complete colour scale ranges from D, indicating complete colourlessness, to Z, which indicates a distinct yellow-brown or grayish cast. Blue Nile carries only D-J colour. For gemstones, colour is described in terms of tone and hue.


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