Rock Identifier
Green Aventurine (SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)) — mineral
mineral

Green Aventurine

SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)

Hardness: 6.5-7 (Mohs scale); Color: Pale to dark green with a shimmering effect; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline); Specific Gravity: 2.64-2.69

Hardness
6
Color
Pale to dark green with a shimmering effect
Luster
Vitreous to waxy
Identified More mineral

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Physical properties

Hardness: 6.5-7 (Mohs scale); Color: Pale to dark green with a shimmering effect; Luster: Vitreous to waxy; Crystal Structure: Trigonal (microcrystalline); Specific Gravity: 2.64-2.69

Formation & geological history

Formed in magmatic and metamorphic environments where silica-rich fluids crystallize. The green color and shimmer are caused by inclusions of chrome-rich mica (fuchsite) within the quartz matrix.

Uses & applications

Primarily used in jewelry for cabochons, beads, and carvings. Also used as an ornamental stone in home decor and by collectors for its supposed metaphysical properties.

Geological facts

The name Aventurine comes from the Italian word 'a ventura,' meaning 'by chance,' referring to the discovery of aventurine glass in the 18th century which happens to look very similar to this natural stone.

Field identification & locations

Identify by its characteristic 'aventurescence' (a metallic glitter caused by flat mineral inclusions). It is commonly found in India, Brazil, and Russia. Unlike Jade, it often shows tiny sparkling platelets when rotated under light.