mineral
Garnet
Silicate mineral group (e.g., Almandine, Fe3Al2(SiO4)3)
AI-generated identification · may be incorrectHardness of 6.5-7.5 on Mohs scale, deep red to brown color, vitreous to subadamantine luster, isometric crystal system with dodecahedron or trapezohedron habits.
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Physical properties
Hardness of 6.5-7.5 on Mohs scale, deep red to brown color, vitreous to subadamantine luster, isometric crystal system with dodecahedron or trapezohedron habits.
Formation & geological history
Formed through regional or contact metamorphism of aluminum-rich sedimentary rocks (pelites) and in igneous rocks like pegmatites under high temperature and pressure.
Uses & applications
Widely used as a semi-precious gemstone in jewelry and as an industrial abrasive for waterjet cutting and sandblasting.
Geological facts
Garnets have been used as gemstones since the Bronze Age and are often found as weathered-out crystals in stream beds.
Field identification & locations
Identify by its distinct dark red color, high hardness, isometric crystal shape, and lack of cleavage. Found worldwide in metamorphic schists and gneisses.
