Oppenheimer Diamond

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Oppenheimer Diamond
Oppenheimer Diamond.jpg
Oppenheimer Diamond displayed in the Smithsonian Institution
Type of stonediamond
Weight253.7 carats (50.74 g)
Dimensions20 mm × 20 mm
Country of originSouth Africa
Mine of originDutoitspan Mine

The Oppenheimer Diamond, a nearly perfectly formed 253.7 carats (50.74 g) yellow diamond crystal, is one of the largest uncut diamonds in the world,[1] and measures approximately 20 × 20 millimeters. It was discovered in the Dutoitspan Mine, Kimberley, South Africa, in 1964.[1] Harry Winston acquired the stone and presented it to the Smithsonian Institution in memory of Sir Ernest Oppenheimer.[1]


  1. ^ a b c "Oppenheimer Diamond [117538]". Smithsonian Institution. Retrieved 29 June 2013.

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