gemstone
Ruby
Corundum (Al2O3:Cr)
AI-generated identification · may be incorrectHardness of 9 on the Mohs scale with a subconchoidal to uneven fracture. Exhibits a deep red color due to chromium impurities and a vitreous to adamantine luster.
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Physical properties
Hardness of 9 on the Mohs scale with a subconchoidal to uneven fracture. Exhibits a deep red color due to chromium impurities and a vitreous to adamantine luster.
Formation & geological history
Forms within metamorphic and igneous rocks, such as marble and basalt, through high-temperature crystallization over millions of years.
Uses & applications
Extensively utilized in high-end jewelry, luxury timepieces, and historical laser technology.
Geological facts
Ruby is one of the traditional cardinal gemstones and is rarer than diamond depending on its clarity and size.
Field identification & locations
Identified by its extreme hardness, dichroism, and distinct crimson fluorescence under ultraviolet light. Major deposits are found in Myanmar, Mozambique, and Thailand.
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