gemstone
Ruby
Corundum (Al2O3:Cr)
AI-generated identification · may be incorrectHardness of 9 on the Mohs scale, deep red color due to chromium traces, vitreous to adamantine luster, trigonal crystal system.
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Physical properties
Hardness of 9 on the Mohs scale, deep red color due to chromium traces, vitreous to adamantine luster, trigonal crystal system.
Formation & geological history
Forms in metamorphic and igneous rocks, specifically marbles and aluminum-rich pegmatites, over millions of years under high pressure and temperature.
Uses & applications
Primarily used in fine jewelry, laser technology, and watchmaking bearings.
Geological facts
Ruby is one of the traditional cardinal gems, with the finest 'pigeon's blood' varieties originating from Myanmar.
Field identification & locations
Identified by its extreme hardness, red fluorescence under UV light, and characteristic inclusion patterns. Found in Myanmar, Thailand, Sri Lanka, and East Africa.
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