mineral

Likely garnet (rough, dark-red variety)

Garnet group; possibly almandine, Fe₃Al₂(SiO₄)₃

AI-generated identification · may be incorrect

Appears dark reddish-brown to nearly black, with a vitreous luster and irregular fracture; garnets typically have Mohs hardness 6.5–7.5 and cubic crystal structure. The photo is not detailed enough to confirm the mineral or its properties.

Identified October 10, 2026More mineral →

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Physical properties

Formation & geological history

Garnets commonly form during metamorphism of aluminum-rich rocks, though some occur in igneous rocks and sediments; formation ages vary widely by deposit.

Uses & applications

Used as an abrasive, in waterjet cutting, and as a gemstone when clear and attractive; this small specimen is mainly suitable for collecting.

Geological facts

Garnet is a mineral group rather than a single species; its name covers several related silicate minerals.

Field identification & locations

The dark, red-brown appearance is consistent with garnet, but identification would require tests such as hardness, streak, and examination of crystal form. Garnets occur worldwide, including India, Sri Lanka, Madagascar, and the United States.