gemstone
Ruby
Corundum (Al2O3:Cr)
AI-generated identification · may be incorrectHardness of 9 on the Mohs scale, vibrant red color due to chromium traces, adamantine to vitreous luster, and trigonal crystal system.
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Physical properties
Hardness of 9 on the Mohs scale, vibrant red color due to chromium traces, adamantine to vitreous luster, and trigonal crystal system.
Formation & geological history
Formed in metamorphic and igneous environments under high temperature and pressure conditions over millions of years.
Uses & applications
Extensively used in high-end fine jewelry, watchmaking bearings, and industrial lasers.
Geological facts
Ruby is one of the traditional cardinal gemstones, with top-quality pigeon's-blood specimens commanding higher prices per carat than diamonds.
Field identification & locations
Identified by its extreme hardness, red fluorescence under UV light, and distinct hexagonal crystal habit in raw form; commonly sourced from Myanmar, Thailand, and East Africa.
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