How Diamonds Get Their Color, Sotheby's Diamonds

Not all valuable diamonds are colorless or white. In fact, a variety of minerals, from nitrogen to boron, can affect a gem’s hue – as well as its value.

A 3.95 Carat Oval-Shaped Diamond, Y-Z Color, VS1 Clarity

High-profile auctions bring fancy color diamonds into spotlight

15 Colored Diamonds in Blue, Pink, Yellow, Green & All Shades in

The Splendour of Natural Colour Diamonds, Jewelry

The World's Largest Flawless Diamond Could Get $15 Million+ at

A 3.10 Carat Emerald-Cut Diamond, I Color, VS1 Clarity

Sotheby's to Auction Rare Blue Diamond - The New York Times

15 Colored Diamonds in Blue, Pink, Yellow, Green & All Shades in

Sotheby's and De Beers Announce the Sale of Eight Rare Fancy Blue