Garnet
Real mineral · uncommon · X₃Y₂(SiO₄)₃
A silicate mineral group spanning a wide range of compositions and colours. Forms primarily in metamorphic rocks under moderate to high pressure. Used as an abrasive due to its hardness and lack of cleavage.
Identity
- Formula
- X₃Y₂(SiO₄)₃
- Chemical class
- silicate
- Mineral group
- Demantoid, Grossular, Spessartine, Tsavorite, Uvarovite
- Also known as
- Almandine (common red variety), Pyrope, Hessonite, Tsavorite
Crystallography
- Crystal system
- cubic
- Habits
- dodecahedral, cubic, massive
- Fracture
- conchoidal
Physical properties
- Mohs hardness
- 7
- Density
- 3.9 g/cm³
- Luster
- vitreous, resinous
- Colors
- red, garnet-red, orange, yellow, green, brown, black
- Streak
- white
- Transparency
- transparent, translucent
Geology
- Origins
- metamorphic, igneous
- Host rocks
- schist, gneiss, granite, kimberlite
- Associated minerals
- Quartz, feldspar, Mica, Kyanite
- Geography
- India, Brazil, USA, Czech Republic, Sri Lanka
Classification
- Rarity
- uncommon
- Gem quality
- Yes
Arcane properties
- Affinity
- fire, earth
- Effects
- elemental fire, warding
- Planar origin
- Material Plane
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