gemstone
Yellow Sapphire
Corundum (Al2O3)
AI-generated identification · may be incorrectHardness of 9 on the Mohs scale, yellow to orange-yellow color, vitreous to subadamantine luster, trigonal crystal system, and specific gravity around 4.0.
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Physical properties
Hardness of 9 on the Mohs scale, yellow to orange-yellow color, vitreous to subadamantine luster, trigonal crystal system, and specific gravity around 4.0.
Formation & geological history
Forms in metamorphic and igneous rock environments, such as marble and alkali basalts, through high-temperature crystallization under geological pressures.
Uses & applications
Widely used in high-end jewelry for rings, necklaces, and bracelets due to its exceptional durability and brilliant yellow coloration.
Geological facts
Yellow sapphires are colored by trace amounts of iron and are often associated with prosperity and wisdom in gem lore.
Field identification & locations
Identified by its extreme hardness, high refractive index, and distinctive yellow hues; commonly sourced from Sri Lanka, Madagascar, and Thailand.
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