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Smithsonian National Museum of Natural History


Transparent amblygonite is commonly colorless to light yellow. This modified emerald cut gem is a beautiful greenish-blue color, making it a rare and important addition to the National Gem Collection.
Photo by Greg Polley. Click to zoom.
Catalog Number NMNH G10652-00
Locality Brazil
Weight 29.37 ct

Purchased with funds from the Tiffany & Co. Foundation in 2010.

Transparent amblygonite, commonly colorless to light yellow, is sometimes faceted and used as a gemstone. However, when set in jewelry it is prone to fracture, chipping, and abrasion, as its hardness and toughness are poor. The main sources for gem quality amblygonite are Brazil and the U.S. Other localities include Australia, France, Germany, Namibia, Norway, and Spain. The beautiful blue-green color is what makes this amblygonite rare and unusual and a wonderful addition to the National Gem Collection.


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