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Smithsonian National Museum of Natural History

Fluorite

Sometimes fluorite is cut as gemstones, but mainly for collectors, as the hardness (4 on the Mohs’s scale) is very low, making the stones too soft and fragile to be used in most jewelry. The intense yellow color of this fluorite from Tanzania makes it a rare and important addition to the National Gem Collection.
Photo by Greg Polley. Click to zoom.
Catalog Number NMNH G10614-00
Locality Tanzania
Weight 40.01 ct

Gift of Mr. Dudley Blauwet in 2009.

Fluorite gems are popular for their great variety of candy-colored pastels, most commonly pale green, purple, yellow, orange, blue, pink and even colorless. Fluorite is usually transparent to semi-transparent and color zoning is common. In general, fluorite is too soft and fragile to be used in most jewelry, but is often faceted with fancy cuts in large sizes as collector stones. Fluorite is a widely occurring mineral and gem quality specimens are found in Germany, Austria, Switzerland, Norway, Mexico, England, Canada, Kenya, Korea, Pakistan, China, Tanzania, and the United States. This 40.01ct fluorite is fromTanzania. The intense yellow color makes it a rare and important addition to the National Gem Collection.

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