gemstone
Moonstone
Orthoclase feldspar (KAlSi3O8)
AI-generated identification · may be incorrectHardness of 6 on the Mohs scale, pearly to vitreous luster, colorless to white body color with characteristic bluish adularescence, monoclinic crystal system.
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Physical properties
Hardness of 6 on the Mohs scale, pearly to vitreous luster, colorless to white body color with characteristic bluish adularescence, monoclinic crystal system.
Formation & geological history
Forms in igneous rocks like granitic pegmatites and metamorphic environments through the cooling and exsolution of alkali feldspars.
Uses & applications
Extensively used as a gemstone in rings, necklaces, and other jewelry pieces.
Geological facts
Moonstone gets its glowing shimmer, known as adularescence, from light scattering between microscopic layers of albite and orthoclase.
Field identification & locations
Identified by its signature floating blue or white light effect when rotated; sourced primarily from Sri Lanka, India, and Madagascar.
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