gemstone

Peridot gemstone pendant

Olivine, gem-quality forsteritic olivine (approximately (Mg,Fe)₂SiO₄)

AI-generated identification · may be incorrect

Bright yellow-green, transparent, vitreous luster, typically orthorhombic crystal structure; Mohs hardness 6.5–7, specific gravity about 3.2–4.3, with poor cleavage. The faceted stone is set in a silver-colored metal pendant.

Identified August 12, 2026More gemstone →

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Physical properties

Formation & geological history

Peridot forms in magnesium-rich igneous rocks such as basalt and peridotite, and occasionally in meteorites; gem deposits include volcanic regions and ancient mantle-derived rocks. Its geological formation spans various ages rather than one specific period.

Uses & applications

Used primarily in jewelry, including pendants, rings, and earrings; olivine is also an important mantle mineral and has limited industrial refractory use. This appears to be a commercial jewelry setting rather than a raw geological specimen.

Geological facts

Peridot is one of the few gemstones occurring naturally in only one dominant color, though its shade varies with iron content. Historic sources include Zabargad Island in the Red Sea, while major modern production comes from Arizona, Pakistan, Myanmar, and China.

Field identification & locations

Identify it by its distinctive lime-to-olive green color, glassy luster, moderate hardness, and characteristic doubling of facet edges; definitive identification requires refractive-index or gemological testing. The photograph cannot confirm whether it is natural peridot, synthetic material, or another green stone.