gemstone
Yellow Sapphire
Corundum (Al2O3)
AI-generated identification · may be incorrectHardness of 9 on the Mohs scale. Yellow color caused by trace iron impurities, vitreous luster, trigonal crystal system, and no cleavage.
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Physical properties
Hardness of 9 on the Mohs scale. Yellow color caused by trace iron impurities, vitreous luster, trigonal crystal system, and no cleavage.
Formation & geological history
Formed in metamorphic or igneous rocks like pegmatites and marbles under high pressure and temperature over millions of years.
Uses & applications
Used primarily in fine jewelry, luxury watches, and industrial abrasive applications.
Geological facts
Sapphires are second only to diamonds in hardness. Natural yellow sapphire is often associated with prosperity in Vedic astrology.
Field identification & locations
Identified by its extreme hardness and high density. Found notably in Sri Lanka, Madagascar, Australia, and East Africa.
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