mineral

Tumbled orange aventurine (likely)

Quartz, SiO₂, colored by iron-bearing inclusions; exact identification is uncertain from the photo

AI-generated identification · may be incorrect

Opaque orange-brown, rounded and polished, with a fine sparkly sheen. Quartz has Mohs hardness 7 and a trigonal crystal structure; the specimen shows no obvious cleavage.

Identified October 13, 2026More mineral →

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Physical properties

Opaque orange-brown, rounded and polished, with a fine sparkly sheen. Quartz has Mohs hardness 7 and a trigonal crystal structure; the specimen shows no obvious cleavage.

Formation & geological history

Likely quartz-rich material colored by iron oxides, then mechanically tumbled and polished. Its geological age and original formation environment cannot be determined from the image.

Uses & applications

Used as an inexpensive decorative stone, in jewelry, and for mineral collections.

Geological facts

“Aventurine” refers to quartz or quartzite with reflective mineral inclusions; orange material is often iron-stained. Similar-looking dyed stones are also sold as aventurine.

Field identification & locations

A hardness test or closer inspection for glittering inclusions can help distinguish quartz aventurine from softer or dyed look-alikes. Quartz-rich aventurine occurs in several regions, including India and Brazil.