mineral
Green Quartz (Prasiolite)
Silicon Dioxide (SiO2)
Hardness: 7 (Mohs scale), Color: Pale green to olive green, Luster: Vitreous, Crystal structure: Trigonal/Hexagonal, Specific Gravity: 2.65
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Physical properties
Hardness: 7 (Mohs scale), Color: Pale green to olive green, Luster: Vitreous, Crystal structure: Trigonal/Hexagonal, Specific Gravity: 2.65
Formation & geological history
Typically formed through the geothermal heating of amethyst or citrine in volcanic rocks, or occasionally occurs naturally in metamorphic or igneous environments containing iron and nickel inclusions.
Uses & applications
Primarily used in jewelry as a gemstone, for decorative ornaments, and in crystal healing collections.
Geological facts
In nature, green quartz is extremely rare. Almost all commercial green quartz is produced by heat-treating certain types of amethyst. It is often called 'Prasiolite' from the Greek words meaning 'leek-colored stone'.
Field identification & locations
Identified by its hexagonal crystal habit (if uncut), hardness, and characteristic translucent green hue. Common sources include Brazil and Poland.
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