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Corundum (variety: Star Ruby)

With its rich color and well-defined star, the 138.72-carat Rosser Reeves Star Ruby might be the largest and finest star ruby in the world. It is from Sri Lanka, but its early history is not known. When it was purchased by a gem dealer in London in the late 1950s, the ruby weighed 140 carats, but it was subsequently recut to center the star. Rosser Reeves, whose name it now bears, carried it around as a lucky stone, referring to it as his baby. He donated it to the Smithsonian in 1965.

Image Number: 95-40275
Catalog Number: G4257
Weight: 138.72 carats
Gift of Mr. and Mrs. Rosser Reeves , 1965


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