Oppenheimer Diamond

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 mm × 20 mm (0.79 in × 0.79 in). 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]

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  Oppenheimer Diamond
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Oppenheimer Diamond

Oppenheimer Diamond displayed in the Smithsonian Institution
Type of stone	diamond
Weight	253.7 carats (50.74 g)
Dimensions	20 mm × 20 mm (0.79 in × 0.79 in)
Color	yellow
Cut	(uncut)
Country of origin	South Africa
Mine of origin	Dutoitspan Mine
Discovered	1964

See also

• List of diamonds