gemstone
Sunstone
Feldspar (Plagioclase/Orthoclase) with hematite/copper inclusions
AI-generated identification · may be incorrectHardness of 6-6.5 on the Mohs scale, orange to reddish-brown color, vitreous to pearly luster, triclinic or monoclinic crystal system, with distinct cleavage.
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Physical properties
Hardness of 6-6.5 on the Mohs scale, orange to reddish-brown color, vitreous to pearly luster, triclinic or monoclinic crystal system, with distinct cleavage.
Formation & geological history
Formed in igneous rocks like basalt and granite or metamorphic rocks through the exsolution of copper or hematite platelets.
Uses & applications
Widely used in jewelry such as rings and pendants, and highly prized by gemstone collectors.
Geological facts
Sunstone exhibits a distinctive optical phenomenon called aventurescence, where light reflects off microscopic metallic inclusions to create a shimmering effect.
Field identification & locations
Identified by its characteristic reddish-orange body color and metallic glitter; commonly sourced from Oregon, USA, and Norway.
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