Diamonds | The Four C's of Diamonds - Colour
When it comes to diamonds, less colour is usually better. The best colour grade is D, which is completely colourless. The colour chart below explains the GIA grading system for clear (not fancy-coloured) stones.
Diamond Colour Designations
|Colourless (White)||Near Colourless||Faint Yellow or Brown|
|Very Light Yellow or Brown||Light Yellow Or Brown|
Nitrogen atoms in the diamonds are the cause of the discolouration. When you have more nitrogen atoms in a diamond the "Yellower or Browner" the diamond appears. Most natural diamonds contain small quantities of nitrogen atoms that displace the carbon atoms within the crystal's lattice structure. These nitrogen impurities are evenly dispersed throughout the stone, absorbing some of the blue light spectrum, thereby making a diamond appear yellow. For large diamonds, we advise not going below G or H in color, especially if the diamond is being set in white gold or platinum. When a diamond has a very strong yellow colour, it is considered a fancy-coloured diamond, and may actually have a higher value.
Some diamonds that are found have a natural colour because of other chemicals that are present in the crystal. The most common fancy coloured diamonds are yellow (canary), pink, champagne, black, or brown (chocolate). Naturally coloured diamonds are very rare, but many of the colours can be created artificially.
Adamas Goldsmiths has access to both natural and artificially coloured diamonds. If you are interested, or have any questions regarding diamond colour, call us at (780) 434-9479.