Rock Identifier
Yellow Sapphire (Corundum (Al2O3)) — gemstone
gemstone

Yellow Sapphire

Corundum (Al2O3)

AI-generated identification · may be incorrect

Hardness of 9 on the Mohs scale, yellow color due to trace iron, vitreous luster, trigonal crystal system, and no true cleavage.

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Physical properties

Hardness of 9 on the Mohs scale, yellow color due to trace iron, vitreous luster, trigonal crystal system, and no true cleavage.

Formation & geological history

Formed in metamorphic or igneous rocks like pegmatites and marbles under high pressure and temperature over millions of years.

Uses & applications

Widely used in fine jewelry, luxury watches, and industrial applications requiring high durability.

Geological facts

Yellow sapphire, often called Pukhraj stone, is associated with prosperity and good fortune in Vedic astrology.

Field identification & locations

Identified by its extreme hardness, high density, and characteristic yellow hues. Commonly sourced from Sri Lanka, Madagascar, and Thailand.