RockVault
Peridot

Image: <bdi><a href="https://www.wikidata.org/wiki/Q126871368" class="extiw" title="d:Q126871368"><span title="photographer from the United States">Darla Sondrol</span></a></bdi> (CC0)

orthorhombicuncommonSilicates

Peridot

(Mg,Fe)2SiO4

Peridot is the gem variety of olivine, known for its distinctive yellowish-green to olive-green color. This specimen exhibits a vibrant yellowish-green hue, characteristic of high-quality peridot.

Peridot Physical Properties

Mohs Hardness

6.5

Crystal System

orthorhombic

Luster

vitreous

Streak Color

white

Cleavage

poor to distinct on {010}

Fracture

conchoidal

Specific Gravity

3.34

Colors

green, yellowish-green, olive-green

Transparency

transparent

Type Locality

San Carlos Apache Reservation, Arizona, USA

Mineral Group

Silicates

Uses

jewelry, collector

Associated Minerals

pyroxene, chromite, magnetite

Rarity

uncommon

Geological Context

Peridot forms in mafic and ultramafic igneous rocks such as basalt, peridotite, and dunite, crystallizing at high temperatures and pressures deep within the Earth's mantle. It is also found in some meteorites.