gemstone
Ruby
Corundum (Al2O3:Cr)
AI-generated identification · may be incorrectHardness of 9 on the Mohs scale, vivid red color due to chromium traces, vitreous to adamantine luster, and trigonal crystal system.
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Physical properties
Hardness of 9 on the Mohs scale, vivid red color due to chromium traces, vitreous to adamantine luster, and trigonal crystal system.
Formation & geological history
Formed in metamorphic or igneous rocks under high temperature and pressure conditions, often found in marble deposits and alluvial gravels.
Uses & applications
Extensively used in high-end fine jewelry, luxury watches, and historical laser technology.
Geological facts
Ruby is one of the traditional cardinal gemstones and is considered one of the most valuable colored stones on earth.
Field identification & locations
Identified by its extreme hardness, red fluorescence under UV light, and specific gravity around 4.0; commonly sourced from Myanmar, Thailand, and East Africa.
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