mineral
Garnet
Silicate mineral group (e.g., Almandine, Fe3Al2(SiO4)3)
AI-generated identification · may be incorrectHardness of 6.5 to 7.5 on the Mohs scale, typically reddish-brown to dark red in color, vitreous to resinous luster, and crystallizes in the isometric system with dodecahedral or trapezohedral habits.
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Physical properties
Hardness of 6.5 to 7.5 on the Mohs scale, typically reddish-brown to dark red in color, vitreous to resinous luster, and crystallizes in the isometric system with dodecahedral or trapezohedral habits.
Formation & geological history
Forms primarily through regional and contact metamorphism in pelitic schists and gneisses, as well as in certain igneous rocks like pegmatites and peridotites.
Uses & applications
Widely used as a gemstone in jewelry and as an industrial abrasive in waterjet cutting and sandblasting.
Geological facts
Garnets have been used as gemstones since the Bronze Age and sometimes occur as inclusions within diamonds, helping geologists date deep Earth processes.
Field identification & locations
Identified by its distinct isometric crystal habit, lack of cleavage, and high hardness; commonly found in metamorphic rock weathering out into stream gravels.
