mineral

Raw reddish-brown mineral specimen, possibly garnet

Garnet-group silicate, commonly almandine (Fe₃Al₂Si₃O₁₂); identification is uncertain from the blurred image

AI-generated identification · may be incorrect

Dark red to brown, vitreous to resinous luster, likely translucent; garnet has Mohs hardness 6.5–7.5, cubic crystals, no cleavage, and specific gravity about 3.5–4.3. The specimen appears irregular and partly crystalline.

Identified August 15, 2026More mineral →

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At a glance

Common name: Raw reddish-brown mineral specimen, possibly garnet
Scientific name: Garnet-group silicate, commonly almandine (Fe₃Al₂Si₃O₁₂); identification is uncertain from the blurred image
Category: mineral
Identified: August 15, 2026
Method: Standard

AI Estimated Value

About $2–$15 for a common rough specimen; $20–$200+ if unusually large, transparent, well-crystallized, or gem-quality.

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 commonly forms in regionally or contact-metamorphosed schist, gneiss, and skarn, with many deposits dating from ancient Precambrian to younger mountain-building events. It may also occur as weathered placer grains.

Uses & applications

Gem-quality garnet is used in jewelry; industrial garnet is used as an abrasive, blasting media, and waterjet-cutting material. Ordinary rough pieces have mainly educational or collecting value.

Geological facts

Almandine is the most common red garnet and often shows deep wine-red coloration. Garnet is especially useful as a metamorphic index mineral because its composition records pressure and temperature conditions.

Field identification & locations

Look for a glassy, dense, non-cleavable grain that can scratch glass; a crystal habit with dodecahedral or trapezohedral faces supports garnet identification. Common sources include India, Sri Lanka, Madagascar, the United States, and Brazil.