Mineral - Lapis Lazuli

Name Lapis Lazuli
Class Silicates
Category Metamorphic rock
Crystal system Isometric
Chemical composition Mainly Lazurite (Na₈Al₆Si₆O₂₄S₂), with presence of Pyrite, Calcite, and other minerals
Hardness (Mohs scale) 5.5 to 6
Transparency Opaque
Geographical origin Afghanistan, Russia, Chile, Italy, Myanmar