mineral

Green aventurine (rough)

Quartz, SiO₂, containing green fuchsite mica inclusions; aventurine is a variety of quartzite/massive quartz

AI-generated identification · may be incorrect

Opaque to translucent gray-green, with a dull to vitreous luster and granular texture; quartz hardness 7 Mohs, trigonal crystal structure, no cleavage, and specific gravity about 2.6. The photo alone cannot confirm the identification; this piece lacks obvious glittering aventurescence.

Identified October 1, 2026More mineral →

Explore Green aventurine (rough) in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

At a glance

Common name: Green aventurine (rough)
Scientific name: Quartz, SiO₂, containing green fuchsite mica inclusions; aventurine is a variety of quartzite/massive quartz
Category: mineral
Identified: October 1, 2026
Method: Standard

AI Estimated Value

About $1–$10 for a small, common rough piece; higher prices require verified identity, attractive color, or strong aventurescence.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Forms when silica-rich fluids crystallize or recrystallize as quartz with fine mica inclusions, commonly during metamorphism. The exact age and source cannot be determined from the image.

Uses & applications

Used for carvings, beads, cabochons, and decorative stone; low-grade rough may be collected or sold as lapidary material.

Geological facts

Aventurine’s characteristic sparkle, called aventurescence, comes from reflective mineral inclusions such as fuchsite; its intensity varies.

Field identification & locations

Check for quartz-like hardness and, when polished, fine green reflective flecks; green color alone is not diagnostic. Aventurine is found in places including India, Brazil, and Russia.