Wednesday, 26 October 2016

Gray Diamonds

A combination of black and white, gray is a non-spectral color. In their purest forms, gray color diamonds come quite close to colorless stones.

Among colored diamonds, gray diamonds are relatively unknown. This may be due to their extreme rarity. Far more rare than yellow and brown diamonds, gray diamonds are in the lower range of fancy colored diamonds prices ... their pricing is so attractive that they can be considered an alternative to white colorless diamonds based on price.
Most gray colored diamonds get their color due to a high concentration of hydrogen, and rarely boron like blue diamonds.
In the niche of gray diamonds, there are nearly endless options. The human eye can distinguish up to 500 shades of gray and this is probably the number of gray diamond colors there are.

Gray diamonds are graded in the following intensity levels: Light Gray, Fancy Light Gray, Fancy Gray, Fancy Dark Gray, and Fancy Deep Gray.

The most common color modifiers according to the GIA are yellowish, greenish, bluish and violet.

Fancy Dark Violet Gray Diamond

There are few notable gray diamonds because they barely exist. However, two of the most famous diamonds in the world are blue diamonds with a gray modifier (gray blue diamonds): the Hope Diamond and the Wittelsbach Diamond (until Graff re-polished it to a pure blue).

The most famous gray colored diamond is the Sultan of Morocco. The diamond has a cushion cut, a blue hue and weighs 35.27 carats.