Emerald
Real mineral · very rare · Be₃Al₂Si₆O₁₈
Green beryl coloured by chromium and vanadium. One of the rarest beryl varieties due to the unusual geological conditions required for chromium and beryllium to occur together. Most specimens contain visible inclusions called jardin.
Identity
- Formula
- Be₃Al₂Si₆O₁₈
- Chemical class
- silicate
- Mineral group
- Aquamarine, Beryl
- Also known as
- Green beryl, Smaragdus (archaic)
Crystallography
- Crystal system
- hexagonal
- Habits
- prismatic, columnar
- Fracture
- conchoidal
Physical properties
- Mohs hardness
- 7.5
- Density
- 2.76 g/cm³
- Luster
- vitreous
- Colors
- green, dark green, yellow-green, blue-green
- Streak
- white
- Transparency
- transparent, translucent
Geology
- Origins
- hydrothermal, metamorphic
- Host rocks
- schist, granite, limestone
- Associated minerals
- Calcite, Quartz, Pyrite, feldspar
- Geography
- Colombia, Zambia, Brazil, Zimbabwe, Afghanistan
Classification
- Rarity
- very rare
- Gem quality
- Yes
Arcane properties
- Affinity
- life, earth
- Effects
- healing, scrying
- Planar origin
- Material Plane
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