metamorphic

Green Quartz (Aventurine or Green Quartzite)

SiO2 (Silicon Dioxide) with mica inclusions

AI-generated identification · may be incorrect

Hardness: 7 Mohs; Color: Dull to forest green with white/tan speckles; Luster: Vitreous to waxy; Texture: Fine-grained, microcrystalline; Fracture: Conchoidal to uneven

Hardness: 7 Mohs
Color: Dull to forest green with white/tan speckles
Luster: Vitreous to waxy

Identified July 15, 2026More metamorphic →

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Physical properties

Hardness: 7 Mohs; Color: Dull to forest green with white/tan speckles; Luster: Vitreous to waxy; Texture: Fine-grained, microcrystalline; Fracture: Conchoidal to uneven

Formation & geological history

Formed through the metamorphism of quartz-rich sandstone. The green color is typically caused by inclusions of fuchsite mica or other silicate minerals during hydrothermal processes.

Uses & applications

Used for carvings, tumbled stones, jewelry beads, metaphysical practices, and decorative landscaping.

Geological facts

While often mistaken for jade, green quartz is much harder and has a different crystal structure. High-quality specimens with 'aventurescence' (shimmer) are known as Aventurine.

Field identification & locations

Can be identified by its inability to be scratched by a steel knife and its lack of obvious cleavage. Commonly found in riverbeds or areas with metamorphic activity, especially in India, Brazil, and Russia.