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November-December 2014

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Beyond Hope: Some Other Notable Diamonds at the Smithsonian Institution—Part 4

The DeYoung Pink Diamond Though relatively small, the DeYoung Pink Diamond is one of the prettiest gemstones in the National Gem Collection. Pear-shaped, it measures 12.53 × 7.63 × 4.57 mm. Its carat weight has been listed in various references as anywhere between 2.8 and 3 carats, with 2.86 carats being the most prevalent (Post 1997). The diamond was recently weighed on two different scales, with both measuring it at 2.82 carats. This concurs with a Colored Diamond Grading Report from the Gemological Institute of America, dated June 1997, that also had its weight at 2.82 carats. In addition, the report had it graded as a Natural Fancy Intense Purplish-Pink in color with a clarity grade of SI1 (slightly included).

Russell C. Feather II is the collection manager of the National Gem Collection in the Department of Mineral Sciences at the National Museum of Natural History (Smithsonian Institution).

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