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Colour
  • The D-Z colour grades only apply to yellow and brown-tinged stones. If these colours are intense (Z+) in a diamond, they are referred to as "fancy-coloured". For other colours such as blue, pink, red, green, etc., the colour does not need to be intense to be considered fancy as these colours are rare and highly prized
  • For fancy colour diamonds, the market value is determined almost exclusively by the intensity of the colour, which can in some diamonds significantly outweigh the effects of lower clarity and of a poor make
Clarity
(click on colour to find other gemstones)
TREATMENTS
(click on treatment for more information)
CUT
  • Color: stone can be bombarded (i.e. irradiated) by either atomic or subatomic particles; these particles damage the diamond's internal structure, which may change the color. The longer the bombardment, the more intense the color
  • Color: The most recent and sophisticated development in diamond colour improvement is to treat brownish coloured diamonds to improve their colour. The colour change is to either colourless or fancy yellow/green depending on the starting material



Care & Collecting
FASHION AND FUN FACTS
Coloured diamonds have enjoyed a nice surge in popularity over the past few years. The latest iteration of the trend for the 2010 Spring/Summer fashion season is in chocolate coloured diamonds.


One of DeBeers' most beautiful collections combines the highly revered gemstone and African folklore--many of the designs incorporate chocolate diamonds. The rarest colored diamonds are red, blue and green. The most sought after colored diamond is "blood red."