Rock Identifier
Green Aventurine (Aventurine Quartz (SiO2 with Fuchsite inclusions)) — mineral
mineral

Green Aventurine

Aventurine Quartz (SiO2 with Fuchsite inclusions)

Hardness: 6.5–7 on the Mohs scale. Color: Forest green to pale green. Luster: Vitreous to waxy. Crystal Structure: Trigonal (microcrystalline). Cleavage: None (conchoidal fracture). Specific gravity: 2.64–2.69.

Hardness
6
Color
Forest green to pale green
Luster
Vitreous to waxy
Identified More mineral

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Physical properties

Hardness: 6.5–7 on the Mohs scale. Color: Forest green to pale green. Luster: Vitreous to waxy. Crystal Structure: Trigonal (microcrystalline). Cleavage: None (conchoidal fracture). Specific gravity: 2.64–2.69.

Formation & geological history

Formed in magmatic and metamorphic environments where silica-rich fluids crystallize. The green color and 'aventurescence' (shimmer) are caused by inclusions of chrome-bearing mica called fuchsite. These rocks are typically found in formations millions of years old.

Uses & applications

Commonly used for lapidary work, cabochons, beaded jewelry, figurines, and as a decorative stone in landscaping. It is also popular in the metaphysical community.

Geological facts

Aventurine is named after the Italian word 'a ventura,' meaning 'by chance.' This refers to the accidental discovery of 'aventurine glass' in the 18th century, which looked remarkably like the natural stone discovered later.

Field identification & locations

Identify in the field by its green color and tiny, shimmering plate-like inclusions. It is most commonly found in India (where the highest quality green material is mined), Brazil, and Russia. It can be distinguished from jade by its lower toughness and shimmering inclusions.