gemstone
Garnet
Almandine Garnet (Fe3Al2(SiO4)3)
AI-generated identification · may be incorrectHardness of 6.5-7.5 on the Mohs scale, deep red to brownish-red color, vitreous luster, isometric crystal system, and no distinct cleavage.
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Physical properties
Hardness of 6.5-7.5 on the Mohs scale, deep red to brownish-red color, vitreous luster, isometric crystal system, and no distinct cleavage.
Formation & geological history
Forms primarily in metamorphic rocks like schist and gneiss through regional metamorphism, as well as in igneous pegmatites.
Uses & applications
Widely used in fine jewelry and as an industrial abrasive for waterjet cutting and sandblasting.
Geological facts
Garnet has been used as a gemstone since the Bronze Age and derives its name from the Latin word for pomegranate due to its seed-like red appearance.
Field identification & locations
Identified by its distinct isometric crystal habit, lack of cleavage, and high specific gravity; commonly sourced from India, Brazil, and African nations.
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