Lapis Lazuli
Real mineral · uncommon · (Na,Ca)₈(AlSiO₄)₆(SO₄,S,Cl)₂
A metamorphic rock rather than a single mineral, composed primarily of lazurite with calcite and pyrite. Valued for over 6,000 years as a pigment source. The gold pyrite flecks are a characteristic feature of high-quality specimens.
Identity
- Formula
- (Na,Ca)₈(AlSiO₄)₆(SO₄,S,Cl)₂
- Chemical class
- silicate
- Mineral group
- Hauyne, Sodalite
- Also known as
- Lazurite rock, Ultramarine stone
Crystallography
- Crystal system
- cubic
- Habits
- massive, granular
- Fracture
- uneven
Physical properties
- Mohs hardness
- 5.5
- Density
- 2.8 g/cm³
- Luster
- waxy, dull
- Colors
- blue, dark blue, violet, blue-green
- Streak
- blue-white
- Transparency
- opaque
Geology
- Origins
- metamorphic
- Host rocks
- marble, limestone
- Associated minerals
- Calcite, Pyrite, Diopside, Hauyne
- Geography
- Afghanistan, Chile, Russia (Siberia), Pakistan
Classification
- Rarity
- uncommon
- Gem quality
- Yes
Arcane properties
- Affinity
- arcane, light
- Effects
- scrying, mind
- Planar origin
- Material Plane
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