mineral
Garnet
Garnet (X3Y2(SiO4)3)
AI-generated identification · may be incorrectHardness: 6.5-7.5. Color: Deep red/burgundy. Luster: Vitreous to resinous. Crystal structure: Isometric (dodecahedral). Cleavage: None. Specific Gravity: 3.1-4.3.
- Hardness
- 6
- Color
- Deep red/burgundy
- Luster
- Vitreous to resinous
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Physical properties
Hardness: 6.5-7.5. Color: Deep red/burgundy. Luster: Vitreous to resinous. Crystal structure: Isometric (dodecahedral). Cleavage: None. Specific Gravity: 3.1-4.3.
Formation & geological history
Formed through high-pressure and high-temperature metamorphism of sedimentary or igneous rocks (typically schist or gneiss) in the Earth's crust.
Uses & applications
Used as an abrasive in sandpaper and waterjet cutting, as a gemstone in jewelry, and as a geological timer for dating tectonic events.
Geological facts
Garnet is the birthstone for January. While predominantly red, it can occur in every color except blue in its natural state.
Field identification & locations
Identify in the field by its distinctive 'soccer ball' shape (dodecahedron), high hardness, and lack of cleavage. Commonly found in metamorphic host rocks worldwide.
