Diamonds come naturally in a variety of colours, yet, colourless or white diamonds still remain most popular.
A colourless diamond allows light to pass effortlessly through the stone and reflects back in an elegant sparkle.
The GIA (Gemological Institute of America) colour grading scale varies from D – totally colourless to Z, light yellow. D through to F are considered colourles while G -J appear colourless when set in a piece of jewellery.
A truly colourless diamond, graded D, is the rarest of colours and therefore most valuable. However, colour is subjective and can be masked or enhanced by the colour of the metal it is set in. For example the beauty and radiance of stones graded D -J are enhanced mounted in white gold or platinum. Warmer coloured stones graded K – Z are particularly beautiful mounted in yellow gold.
Fancy coloured diamonds are very rare and come in shades of blue, green, yellow orange, pink and red being the rarest of all.
GIA COLOUR GRADING SCALE
Next: Diamond Clarity