mineral

Tumbled dark reddish-brown stone, possibly garnet or jasper

Indeterminate; likely almandine garnet (Fe₃Al₂Si₃O₁₂) or iron-rich jasper (microcrystalline SiO₂)

AI-generated identification · may be incorrect

Small, polished/tumbled specimen with burgundy-brown color and dark areas; apparent vitreous to waxy luster. Garnet hardness is 6.5–7.5 Mohs with no cleavage; jasper is about 6.5–7 Mohs and opaque.

Identified September 7, 2026More mineral →

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At a glance

Common name: Tumbled dark reddish-brown stone, possibly garnet or jasper
Scientific name: Indeterminate; likely almandine garnet (Fe₃Al₂Si₃O₁₂) or iron-rich jasper (microcrystalline SiO₂)
Category: mineral
Identified: September 7, 2026
Method: Standard

AI Estimated Value

About $1–$10 for a common tumbled stone; attractive gem-quality garnet specimens may range from $20–$100+.

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

Garnet forms in metamorphic rocks through recrystallization under heat and pressure; jasper forms from silica-rich fluids or sedimentary deposits. Exact age and origin cannot be determined from the image.

Uses & applications

Garnet is used as an abrasive and gemstone; jasper is used for cabochons, beads, carvings, and decorative objects.

Geological facts

The blurred image is insufficient for confident identification; translucency, streak, hardness, and specific gravity would distinguish garnet from jasper.

Field identification & locations

Check whether edges transmit light: garnet may be translucent, while jasper is opaque; garnet commonly shows crystal-like facets, whereas jasper has mottled or banded texture. Common sources include India, Brazil, Africa, and the United States.