Mineral

Green Aventurine

Aventurine Quartz (SiO2 with inclusions of Fuchsite)

Hardness: 6.5-7.0 (Mohs scale); Color: Light to dark green with silvery-green sparkles; Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal; Cleavage: None; Specific gravity: 2.64-2.69. It features a characteristic 'aventurescence' (metallic glimmer).

Hardness: 6
Color: Light to dark green with silvery-green sparkles
Luster: Vitreous to waxy

Identified January 11, 2026More mineral →

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Physical properties

Formation & geological history

Formed in magmatic environments or through hydrothermal deposition. It begins as molten silica that crystallizes; the green color is specifically caused by platy inclusions of chromium-rich mica known as fuchsite. Found in Precambrian to modern geological formations.

Uses & applications

Primarily used for jewelry (cabochons, beads), decorative carvings, aquarium gravel, and as a popular semi-precious stone for collectors and metaphysical practices.

Geological facts

The name 'aventurine' is derived from the Italian 'a ventura,' meaning 'by chance.' This refers to the 18th-century accidental discovery of 'aventurine glass' (goldstone), which the natural stone resembles.

Field identification & locations

Identify in the field by its distinct green color and the 'sparkle' (aventurescence) visible when rotating the stone under light. Commonly found in India (the largest producer), Brazil, Russia, and Austria. Collectors should look for its waxy texture when polished and its inability to be scratched by a steel knife.

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