gemstone

Rough red garnets

Garnet-group minerals, likely almandine (Fe₃Al₂(SiO₄)₃) or pyrope–almandine; species cannot be confirmed from the photo alone

AI-generated identification · may be incorrect

Small, deep-red to purplish, translucent rough crystals with irregular to partly crystal-shaped surfaces and a vitreous luster. Garnets have Mohs hardness 6.5–7.5, cubic crystal structure, no cleavage, and specific gravity typically 3.5–4.3.

Identified October 7, 2026More gemstone →

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At a glance

Common name: Rough red garnets
Scientific name: Garnet-group minerals, likely almandine (Fe₃Al₂(SiO₄)₃) or pyrope–almandine; species cannot be confirmed from the photo alone
Category: gemstone
Identified: October 7, 2026
Method: Standard

AI Estimated Value

Approximately $1–$20 for a handful of small, ungraded rough stones; substantially more only if verified as clean, cuttable gem material.

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

Garnets form in metamorphic rocks, especially schist and gneiss, and may also crystallize in some igneous rocks; weathering can concentrate them in stream or beach gravels. Their age depends on the host rock and cannot be determined from appearance.

Uses & applications

Gem-quality pieces are cut for jewelry; lower-grade garnet is used as an abrasive in blasting, waterjet cutting, and sandpaper.

Geological facts

Garnet is a mineral group, not a single mineral; its members span several colors, though red varieties are especially familiar.

Field identification & locations

The red color and lack of cleavage are consistent with garnet, but identification of these small rough pieces needs testing or gemological analysis. Garnets occur worldwide, including India, Sri Lanka, Madagascar, and the United States.