Rock Identifier
Green Aventurine (Si O2 (Silicon Dioxide with Fuchsite inclusions)) — mineral
mineral

Green Aventurine

Si O2 (Silicon Dioxide with Fuchsite inclusions)

Hardness: 7 Mohs; Color: Green (due to Fuchsia mica); Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal (cryptocrystalline); Specific gravity: 2.64-2.69; Cleavage: None (conchoidal fracture).

Hardness
7 Mohs
Color
Green (due to Fuchsia mica)
Luster
Vitreous to waxy
Identified More mineral

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Physical properties

Hardness: 7 Mohs; Color: Green (due to Fuchsia mica); Luster: Vitreous to waxy; Crystal structure: Trigonal/Hexagonal (cryptocrystalline); Specific gravity: 2.64-2.69; Cleavage: None (conchoidal fracture).

Formation & geological history

Formed primarily in metamorphic environments where quartz-rich sediments are subjected to heat and pressure, allowing mica inclusions like fuchsia to grow within the quartz matrix. Most deposits are several hundred million years old.

Uses & applications

Widely used for ornamental carvings, tumble stones, beads in jewelry, and as a popular specimen for crystal healing and mineral collectors.

Geological facts

Aventurine is known for 'aventurescence,' a shimmering effect caused by platy mineral inclusions. It was named after 'a ventura' (by chance), originally referring to a type of Italian glass discovered accidentally in the 18th century.

Field identification & locations

Identified by its signature green color and shiny mica inclusions visible under magnification. Commonly found in India, Brazil, and Russia. Collectors should look for even color distribution and a strong shimmering effect.