gemstone
Peridot
Olivine ((Mg,Fe)2SiO4)
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, olive-green color, vitreous luster, and an orthorhombic crystal system with conchoidal fracture.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, olive-green color, vitreous luster, and an orthorhombic crystal system with conchoidal fracture.
Formation & geological history
Forms in mafic and ultramafic igneous rocks deep within the Earth's mantle, and occasionally in stony meteorites.
Uses & applications
Used primarily as a gemstone in jewelry, particularly in rings and earrings.
Geological facts
Peridot is one of the few gemstones that occurs in only one color: green. Some specimens originate from pallasite meteorites, making them extraterrestrial in origin.
Field identification & locations
Easily identified by its characteristic yellowish-green color and conchoidal fracture. Often found in volcanic regions and mantle xenoliths.
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