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

Green Aventurine

Quartz with Fuchsite inclusions (SiO2)

Hardness: 7 Mohs scale; Color: Green (from Fuchsite mica); Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific gravity: 2.64-2.69. It displays 'aventurescence' (a metallic glitter effect).

Hardness
7 Mohs scale
Color
Green (from Fuchsite mica)
Luster
Vitreous to waxy
Identified More mineral
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Physical properties

Hardness: 7 Mohs scale; Color: Green (from Fuchsite mica); Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None/Conchoidal fracture; Specific gravity: 2.64-2.69. It displays 'aventurescence' (a metallic glitter effect).

Formation & geological history

Formed in metamorphic rocks and hydrothermal veins. The green color is caused by platy inclusions of chromium-rich mica (fuchsite) within the quartz matrix. Most deposits are several hundred million years old.

Uses & applications

Commonly used for lapidary work, jewelry (beads, cabochons), ornamental carvings, and as a popular stone in metaphysical collecting.

Geological facts

Aventurine is known as the 'Stone of Opportunity'. The name translates from the Italian 'a ventura', meaning 'by chance', originally referring to the accidental discovery of 'aventurine glass' in the 18th century.

Field identification & locations

Identified by its granular quartzite texture and distinctive green glittery sheen when rotated under light. Major deposits are found in India, Brazil, and Russia. Collect high-quality pieces with strong 'shimmer' or aventurescence.