gemstone
Green Sapphire
Corundum (Al2O3)
AI-generated identification · may be incorrectMohs hardness of 9, green color due to iron and titanium impurities, vitreous luster, and trigonal crystal system.
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Physical properties
Mohs hardness of 9, green color due to iron and titanium impurities, vitreous luster, and trigonal crystal system.
Formation & geological history
Forms in aluminum-rich metamorphic or igneous rocks like pegmatites through high-temperature crystallization.
Uses & applications
Utilized extensively in fine jewelry, watch crystals, and specialized industrial cutting tools.
Geological facts
Sapphires belong to the corundum mineral species and come in every color except red, which is classified as ruby.
Field identification & locations
Identified by its extreme hardness and distinct crystal habit, commonly sourced from Madagascar, Australia, and Sri Lanka.
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