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DeYoung Pink Diamond

Very few diamonds are completely without color. In most diamonds, a few atoms of nitrogen substitute for some of the carbon as the crystals form, causing the stones to be tinted yellow or brown. When the hue is sufficiently intense, the diamond is graded "fancy-colored." The popularity of colored diamonds has increased dramatically in recent years, and some of the most valuable gemstones are fancy-colored diamonds, especially in shades of blue, pink, and red. This 2.86-carat pear shaped pink diamond comes from the Williamson mine in Tanzania. Red and pink diamonds probably owe their color to light interacting with defects, such as missing atoms, in their crystalline structure. The Gemological Institute of America (GIA) graded the DeYoung Pink as a natural fancy intense purplish-pink diamond with a clarity grade of SI-1.

Image Number: 95-40365
Catalog Number: G3772
Weight: 2.86 carats
Gift of S. Sydney DeYoung , 1963
Locality: Williamson Mine , Tanzania


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Smithsonian National Museum of Natural History Department of Mineral Sciences website Credits