gemstone
Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
AI-generated identification · may be incorrectMohs hardness of 6 to 6.5 with a vitreous luster. Features a distinct golden-orange to reddish shimmer caused by microscopic copper platelet inclusions.
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Physical properties
Mohs hardness of 6 to 6.5 with a vitreous luster. Features a distinct golden-orange to reddish shimmer caused by microscopic copper platelet inclusions.
Formation & geological history
Formed within igneous rocks like basalt and andesite, or metamorphic rocks, through cooling magma or high-temperature metamorphism.
Uses & applications
Widely used in high-end jewelry, cabochons, carvings, and as a collectible gemstone.
Geological facts
The optical phenomenon of a metallic glint from within is known as aventurescence. Oregon produces some of the world's finest gem-quality sunstone containing native copper crystals.
Field identification & locations
Identified by its characteristic warm orange body color and sparkling schiller effect. Commonly sourced from the USA, India, Norway, and Madagascar.
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