Na₃Ca(Al₃Si₃O₁₂)S
Lapis lazuli
Sar-e-Sang in Afghanistan has fed this blue rock for millennia, pyrite stars included.
Na₃Ca(Al₃Si₃O₁₂)S
Sar-e-Sang in Afghanistan has fed this blue rock for millennia, pyrite stars included.
Lapis lazuli is Na₃Ca(Al₃Si₃O₁₂)S before it is a story. The lattice is cubic, Mohs 5–5.5, and the eye meets blue.
The better pieces still come out of the ground in Afghanistan, Chile, Russia. Sar-e-Sang in Afghanistan has fed this blue rock for millennia, pyrite stars included.
The parlour tradition ties Lapis lazuli to water and to the throat centre. The old site stood it near: Sagittarius, Taurus, Capricorn.
Softer than a steel knife. No ultrasonic bath, no acid, no sudden heat. Dust wants a dry cloth.