mineral

Peridot (Olivine)

Olivine ((Mg, Fe)2SiO4)

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs scale), Color: Olive-green to lime green, Luster: Vitreous (glassy), Crystal structure: Orthorhombic, Cleavage: Poor, Specific gravity: 3.2-4.3.

Hardness: 6

Identified July 7, 2026More mineral →

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Physical properties

Hardness: 6.5-7 (Mohs scale), Color: Olive-green to lime green, Luster: Vitreous (glassy), Crystal structure: Orthorhombic, Cleavage: Poor, Specific gravity: 3.2-4.3.

Formation & geological history

Formed deep within the Earth's mantle and brought to the surface by basaltic magmas during volcanic eruptions. It is one of the few gems that form in the mantle rather than the crust.

Uses & applications

Primarily used as a gemstone in jewelry, especially for rings, earrings, and necklaces. It is the birthstone for August.

Geological facts

Peridot has been found in pallasite meteorites, meaning this gemstone can literally come from outer space. Ancient Egyptians called it the 'gem of the sun'.

Field identification & locations

Identifiable by its distinct olive-green hue and 'lily pad' inclusions (circular fractures). Common locations include Arizona (USA), Pakistan, Myanmar, and the Canary Islands.