mineral
Tumbled Aventurine
SiO2 (Quartz with Fuchsite inclusions)
Hardness: 7 Mohs, Color: Shimmering green, Luster: Vitreous to waxy, Crystal Structure: Trigonal (microcrystalline), Specific Gravity: 2.63-2.69
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Physical properties
Hardness: 7 Mohs, Color: Shimmering green, Luster: Vitreous to waxy, Crystal Structure: Trigonal (microcrystalline), Specific Gravity: 2.63-2.69
Formation & geological history
Aventurine is a form of quartz characterized by its translucency and the presence of platy mineral inclusions that give a shimmering or glistening effect termed aventurescence. It forms in metamorphic rocks and magmatic hydrothermal environments.
Uses & applications
Extensively used in jewelry making, ornamental carvings, lapidary arts, and as a popular stone for meditation and crystal collecting.
Geological facts
The name aventurine derives from the Italian 'a ventura' meaning 'by chance,' which originally referred to the accidental discovery of aventurine glass (goldstone) in the 18th century.
Field identification & locations
Field identification is based on its green color and the characteristic 'aventurescence' (metallic glitter) caused by tiny flakes of green mica (fuchsite). Found commonly in India, Brazil, and Russia.
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