metamorphic

Green Aventurine

Aventurine Quartz (SiO2 + Fuchsite mica)

AI-generated identification · may be incorrect

Hardness: 6.5-7 on Mohs scale; Color: Pale to dark green with fuchsitic sheen; Luster: Vitreous to waxy; Crystal structure: Hexagonal/Trigonal; Cleavage: None; Specific Gravity: 2.64-2.69

Hardness: 6
Color: Pale to dark green with fuchsitic sheen
Luster: Vitreous to waxy

Identified May 10, 2026More metamorphic →

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Physical properties

Hardness: 6.5-7 on Mohs scale; Color: Pale to dark green with fuchsitic sheen; Luster: Vitreous to waxy; Crystal structure: Hexagonal/Trigonal; Cleavage: None; Specific Gravity: 2.64-2.69

Formation & geological history

Formed through the metamorphism of sandstone into quartzite, where small inclusions of green fuchsite mica are trapped within the quartz matrix. Most deposits are Proterozoic in age.

Uses & applications

Primarily used for ornamental carvings, jewelry (cabochons and beads), and as a popular stone in metaphysical/healing collections.

Geological facts

Aventurine is named for 'a ventura' (by chance), a type of Italian glass discovered in the 18th century that looked similar to this natural stone. The sparkling effect seen in the stone is called aventurescence.

Field identification & locations

Identify by its characteristic green color and 'aventurescence' (a shimmering effect caused by mica inclusions). Commonly found in India, Brazil, and Russia. To identify in the field, look for a green, granular quartz with a distinct internal sparkle.