mineral

Almandine Garnet

Almandine (Fe3Al2(SiO4)3)

Hardness of 6.5 to 7.5 on the Mohs scale, deep red to brownish-red color, vitreous to resinous luster, and isometric crystal system.

Identified October 23, 2026More mineral →

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Physical properties

Hardness of 6.5 to 7.5 on the Mohs scale, deep red to brownish-red color, vitreous to resinous luster, and isometric crystal system.

Forms in metamorphic rocks like schists and gneisses via regional metamorphism, as well as in certain igneous rocks like pegmatites.

Widely used as a gemstone in jewelry and as an industrial abrasive in waterjet cutting and sandblasting.

Almandine is the most common variety of garnet and derives its name from Alabanda, an ancient processing center in Asia Minor.

Identified by its deep red color, lack of cleavage, and high hardness; commonly found in stream gravels and metamorphic terrains worldwide.

Gneiss or Schist

Gneiss or Mica Schist with Garnet

Limonite

FeO(OH)•nH2O

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

Tumbled granite

Granite, a coarse-grained felsic intrusive igneous rock

Feldspar

Feldspar Group (Tectosilicate, e.g., KAlSi3O8)

Pegmatite with Tourmaline and Quartz

Igneous Pegmatite