gemstone
Ruby
Corundum (Al2O3:Cr)
AI-generated identification · may be incorrectHardness of 9 on the Mohs scale, vivid red color due to chromium, adamantine to vitreous luster, and trigonal crystal system.
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Physical properties
Hardness of 9 on the Mohs scale, vivid red color due to chromium, adamantine to vitreous luster, and trigonal crystal system.
Formation & geological history
Forms in metamorphic and igneous rocks through the crystallization of aluminum-rich magmas or hydrothermal alteration under high temperatures and pressures.
Uses & applications
Extensively used in high-end fine jewelry, luxury timepieces, and formerly in historical laser technology.
Geological facts
Ruby is one of the traditional cardinal gemstones and fine, pigeon-blood specimens from Myanmar can command higher prices per carat than diamonds.
Field identification & locations
Identified by its extreme hardness, red fluorescence under UV light, and distinct density; commonly mined in Myanmar, Thailand, and East Africa.
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