gemstone
Ruby
Corundum (Al2O3:Cr)
AI-generated identification · may be incorrectHardness of 9 on the Mohs scale, vibrant pink to blood-red color caused by chromium, adamantine to vitreous luster, and trigonal crystal system with no true cleavage.
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Physical properties
Hardness of 9 on the Mohs scale, vibrant pink to blood-red color caused by chromium, adamantine to vitreous luster, and trigonal crystal system with no true cleavage.
Formation & geological history
Formed in metamorphic and igneous environments, typically within marble or basaltic terranes, over millions of years through high-temperature and high-pressure crystallization.
Uses & applications
Extensively used in high-end jewelry, luxury timepieces, and historically in early laser technology.
Geological facts
Ruby is one of the traditional cardinal gemstones and fine-quality Burmese specimens 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, Mozambique, and Thailand.
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