Diamonds occur in every color - from whites to pinks, to steel greys and blues, to blacks. I've always found it to be counter-intuitive that "color" refers to the grading scale of a "colorless" or "white" diamond. So here's the scoop..
- The majority of diamonds are "colorless" or "white" and they are considered to be in the normal color range. In fact for every 10,000 "white" diamonds, there will be one naturally colored one.
- Gemological Institute of America (GIA) uses the color scale to measure the degree of yellowness in a "white" diamond.
- The rarest and most highly valued diamond is one that is absolutely colorless - with no hint of yellow.
- A lettering system from D to Z is used to identify the amount of color present in each diamond, with D awarded only to rare, totally colorless diamonds.
- In order to be graded, the diamond needs to be a loose stone. This is because the metal of the setting can affect the color
Quick tip: If you are considering a platinum or white gold setting, consider a diamond in the D-G range. Yellow gold will be much more forgiving to a less than colorless stone. However, regardless of the setting, the diamond will start to appear yellow if the color grade is lower than about J.