mineral
Almandine Garnet
Fe3Al2(SiO4)3
AI-generated identification · may be incorrectHardness of 6.5 to 7.5 on the Mohs scale, deep red to brownish-black color, vitreous to resinous luster, and an isometric crystal system with no true cleavage.
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Physical properties
Hardness of 6.5 to 7.5 on the Mohs scale, deep red to brownish-black color, vitreous to resinous luster, and an isometric crystal system with no true cleavage.
Formation & geological history
Forms in metamorphic rocks like schist and gneiss through regional metamorphism, as well as in igneous rocks like pegmatites.
Uses & applications
Widely used as a gemstone in jewelry and as an industrial abrasive in waterjet cutting and sandblasting.
Geological facts
Almandine is the most common and widespread member of the garnet group, often forming distinctive dodecahedral or trapezohedral crystals.
Field identification & locations
Identified by its dark red color, high hardness, and characteristic rounded crystal habit; commonly found in metamorphic terrains worldwide.
