Uvarovite
Real mineral · rare · Ca₃Cr₂(SiO₄)₃
Chromium calcium garnet, the only consistently green garnet due to its chromium content. Forms in chromite-bearing ultramafic rocks. Crystals are typically too small for faceting but form spectacular drusy coatings on chromite.
Identity
- Formula
- Ca₃Cr₂(SiO₄)₃
- Chemical class
- silicate
- Mineral group
- Demantoid, Garnet, Grossular, Spessartine, Tsavorite
Crystallography
- Crystal system
- cubic
- Habits
- dodecahedral, massive
- Fracture
- conchoidal
Physical properties
- Mohs hardness
- 7.5
- Density
- 3.77 g/cm³
- Luster
- vitreous
- Colors
- emerald green, dark green
- Streak
- white
- Transparency
- transparent, translucent
Geology
- Origins
- metamorphic
- Host rocks
- serpentinite, chromite deposits
- Associated minerals
- Chromite, Serpentine, Calcite
- Geography
- Russia (Ural Mountains), Finland, South Africa, Canada, India
Classification
- Rarity
- rare
- Gem quality
- Yes
Arcane properties
- Affinity
- earth, life
- Effects
- healing, elemental earth
- Planar origin
- Material Plane
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