gemstone
Moonstone
Orthoclase feldspar, (K,Na)AlSi3O8
AI-generated identification · may be incorrectHardness 6 on Mohs scale, translucent to transparent with white or blue adularescence, vitreous luster, monoclinic crystal system.
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Physical properties
Hardness 6 on Mohs scale, translucent to transparent with white or blue adularescence, vitreous luster, monoclinic crystal system.
Formation & geological history
Formed as intergrown layers of orthoclase and albite within igneous pegmatites and hydrothermal veins.
Uses & applications
Used primarily as a gemstone in high-end jewelry settings such as necklaces, rings, and earrings.
Geological facts
Moonstone exhibits a shimmering optical phenomenon called adularescence caused by light scattering between micro-layers.
Field identification & locations
Identified by its signature billowy sheen and milky transparency; mined in Sri Lanka, India, and Madagascar.
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