gemstone
Ruby
Corundum (Al2O3)
AI-generated identification · may be incorrectHardness of 9 on the Mohs scale, vibrant red color due to chromium, 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, vitreous luster, and trigonal crystal system.
Formation & geological history
Formed in metamorphic or igneous environments under high temperature and pressure, often found in marble or alluvial deposits.
Uses & applications
Extensively used in high-end jewelry, watch bearings, and laser technology.
Geological facts
Ruby is one of the traditional cardinal gemstones, and fine-quality specimens can command higher per-carat prices than diamonds.
Field identification & locations
Identified by its extreme hardness, distinct red fluorescence under UV light, and hexagonal crystal habit; commonly sourced from Myanmar, Thailand, and East Africa.
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