gemstone
Ruby
Corundum (Al2O3:Cr)
AI-generated identification · may be incorrectHardness of 9 on the Mohs scale, vibrant red color due to chromium, adamantine to vitreous luster, trigonal crystal system, and no cleavage.
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Physical properties
Hardness of 9 on the Mohs scale, vibrant red color due to chromium, adamantine to vitreous luster, trigonal crystal system, and no cleavage.
Formation & geological history
Formed in metamorphic and igneous rocks under high temperature and pressure conditions, typically found in marble-hosted deposits.
Uses & applications
Extensively used in high-end jewelry, precision laser technology, and mechanical watch bearings.
Geological facts
Ruby is one of the traditional cardinal gems and derives its name from ruber, the Latin word for red.
Field identification & locations
Identified by its extreme hardness, red fluorescence under UV light, and characteristic dichroism. Major sources include Myanmar, Mozambique, and Thailand.
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