mineral
Green Aventurine
Quartz (SiO2) with fuchsite inclusions
Hardness of 7 on the Mohs scale. Color is light to dark green, often with a shimmering or glittering effect known as aventurescence caused by platy mineral inclusions (such as fuchsite). Luster is vitreous to greasy. Crystal system is trigonal.
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Physical properties
Hardness of 7 on the Mohs scale. Color is light to dark green, often with a shimmering or glittering effect known as aventurescence caused by platy mineral inclusions (such as fuchsite). Luster is vitreous to greasy. Crystal system is trigonal.
Formation & geological history
Forms in metamorphic environments, specifically in quartz veins and pegmatites where silica-rich hydrothermal solutions interact with chromium-rich mica minerals (like fuchsite) over millions of years.
Uses & applications
Widely used in the creation of tumbled stones, decorative carvings, beads, jewelry, and in metaphysical and crystal healing practices.
Geological facts
The name aventurine derives from the Italian 'avventura', meaning 'by chance', referring to the accidental discovery of Italian glassmakers creating a similar glittering glass in the 18th century.
Field identification & locations
Easily identified by its characteristic green color combined with a subtle metallic glitter or sparkle under light (aventurescence). Found globally, with significant deposits in India, Brazil, Russia, and the United States.
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