Friday, April 13, 2012

Gemstone of the Week: Cuprite

(Curpite image found on eragem.com)

Cuprite, as the name suggests, is a copper-based gemstone. It forms as cubic crystals and can also be cubic aggregates with fibrous crystals (this is a variety known as Chalcotrichite or plush copper) Other tie=mes, it may be found as earth massives,  Cuprite forms when copper sulfide veins oxidize.  Cuprite tends to be various shades of red to black in colour.  Great examples of Cuprite can be found in Australia, Namibia, Russia, France, and the U.S.