gemstone
Pink Sapphire
Corundum (Al2O3)
AI-generated identification · may be incorrectHardness of 9 on the Mohs scale, pink to light red color, vitreous to adamantine luster, trigonal crystal system, and a specific gravity around 4.0.
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Physical properties
Hardness of 9 on the Mohs scale, pink to light red color, vitreous to adamantine luster, trigonal crystal system, and a specific gravity around 4.0.
Formation & geological history
Forms in metamorphic and igneous rocks, particularly in aluminum-rich and silica-poor environments like marble and alkali basalts, over millions of years.
Uses & applications
Primarily used in high-end jewelry, industrial bearings, and precision watch components.
Geological facts
Sapphires are second only to diamonds in hardness, and traces of chromium create their prized pink coloration.
Field identification & locations
Identify by extreme scratch resistance and heavy feel; found globally in alluvial gravel deposits and metamorphic rock formations.
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