mineral

Likely garnet crystal

Garnet group, possibly almandine (Fe₃Al₂(SiO₄)₃); identification is uncertain from the photo

AI-generated identification · may be incorrect

Small, dark reddish-brown, rough crystal with a vitreous-to-dull luster. Garnets have Mohs hardness 6.5–7.5, commonly dodecahedral crystals, no cleavage, and specific gravity about 3.5–4.3.

Identified October 15, 2026More mineral →

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Physical properties

Small, dark reddish-brown, rough crystal with a vitreous-to-dull luster. Garnets have Mohs hardness 6.5–7.5, commonly dodecahedral crystals, no cleavage, and specific gravity about 3.5–4.3.

Formation & geological history

Garnets commonly form during metamorphism of aluminum-rich rocks, especially schist and gneiss; they may also occur in igneous rocks and sedimentary placers. Their age depends on the host deposit.

Uses & applications

Garnet is used as an abrasive and, when transparent and well-formed, as a gemstone and collector specimen.

Geological facts

Garnet is a mineral group rather than a single species; its members vary in chemistry and color.

Field identification & locations

A garnet often shows a deep red-brown color, substantial heft, and a hard, blocky crystal habit. Common sources include metamorphic terrains worldwide, including India, Sri Lanka, Madagascar, and the United States.