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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