mineral
Moonstone
Orthoclase feldspar (KAlSi3O8)
AI-generated identification · may be incorrectHardness of 6 on Mohs scale, pearly luster, white to peach color with adularescence, and monoclinic crystal system.
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Physical properties
Hardness of 6 on Mohs scale, pearly luster, white to peach color with adularescence, and monoclinic crystal system.
Formation & geological history
Formed through the cooling of molten magma rich in silicates, commonly crystallizing in pegmatites and hydrothermal veins.
Uses & applications
Widely used in jewelry such as rings and pendants, and treasured by crystal collectors.
Geological facts
Moonstone displays a unique shimmering optical phenomenon called adularescence caused by light scattering between microscopic alternating layers of orthoclase and albite.
Field identification & locations
Identified by its signature floating blue or white sheen; commonly sourced from Sri Lanka, India, and Madagascar.
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