gemstone
Sunstone
Plagioclase Feldspar, (Na,Ca)(Al,Si)4O8
AI-generated identification · may be incorrectHardness of 6-6.5 on the Mohs scale, reddish-orange body color with metallic aventurescence, vitreous luster, triclinic crystal system, and specific gravity around 2.64.
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Physical properties
Hardness of 6-6.5 on the Mohs scale, reddish-orange body color with metallic aventurescence, vitreous luster, triclinic crystal system, and specific gravity around 2.64.
Formation & geological history
Formed within igneous rocks like basalt and gabbro through the exsolution of copper platelets, commonly found in localities like Oregon, USA, and Norway.
Uses & applications
Primarily used as a lapidary gemstone in fine jewelry such as rings, pendants, and earrings.
Geological facts
The distinctive shimmering effect, known as aventurescence, is caused by light reflecting off microscopic copper or hematite inclusions.
Field identification & locations
Identify by its characteristic metallic reddish flash when rotated under a light source; popular among collectors and gem enthusiasts.
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