gemstone
Peridot
Olivine ((Mg,Fe)2SiO4)
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, vibrant olive-green color, vitreous luster, and an orthorhombic crystal system with no distinct cleavage.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, vibrant olive-green color, vitreous luster, and an orthorhombic crystal system with no distinct cleavage.
Formation & geological history
Forms in the Earth's upper mantle under high-temperature conditions and is brought to the surface via volcanic activity.
Uses & applications
Used primarily in fine jewelry, as a birthstone for August, and prized by mineral collectors.
Geological facts
Peridot is one of the few gemstones that occurs in only one color: green. Some extraterrestrial specimens have even been found in pallasite meteorites.
Field identification & locations
Easily identified by its characteristic yellow-green color and typical occurrence in basaltic rocks or mantle xenoliths.
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