gemstone

Faceted yellow-green gemstone, likely peridot

Olivine, typically forsterite-rich (Mg₂SiO₄)

AI-generated identification · may be incorrect

Mohs hardness 6.5–7; transparent yellowish green to olive-green color, vitreous luster, orthorhombic crystal structure, and poor cleavage. The oval faceted cut and strong internal inclusions indicate a polished gemstone rather than a raw specimen.

Identified September 9, 2026More gemstone →

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Physical properties

Formation & geological history

Peridot forms in magnesium-rich igneous rocks, especially basalt and peridotite, and in some meteorites; gem material commonly formed in the mantle and later brought upward by volcanic activity. Important sources include Pakistan, Myanmar, Arizona, Egypt, and Ethiopia.

Uses & applications

Used primarily in jewelry as a relatively affordable colored gemstone; larger, cleaner stones have greater value. It is unsuitable for most construction uses.

Geological facts

Peridot is the gem variety of olivine and is one of the few gemstones occurring in only a narrow color range. Its color is intrinsic to iron in the crystal, rather than mainly caused by trace impurities.

Field identification & locations

Identify it by its distinctive olive-green body color, glassy luster, moderate hardness, and typically visible “lily-pad” inclusions; testing requires refractive-index or spectroscopic equipment. The image alone cannot exclude green tourmaline, zircon, or synthetic glass.