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Because calcite is relatively soft and fragile, it is not usually an important gem mineral. This calcite gem from Balmat, New York, is a spectacular display piece and a testament to the gem cutter's art, in this case that of Art Grant. At 1,800 carats, it is also probably the largest and finest faceted calcite in the world.

Image Number: 96-30177
Catalog Number: G10046
Weight: 1800 carats
Gift of Harold and Doris Dibble , 1994
Locality: Balmat , New York


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