metamorphic

Lapis lazuli pendant

Lapis lazuli; mainly lazurite (Na₃Ca(Si₃Al₃)O₁₂S), with calcite and pyrite

AI-generated identification · may be incorrect

Polished, deep royal-blue opaque stone with scattered pale calcite and possible tiny brassy pyrite flecks. Mohs hardness about 5–5.5; vitreous to greasy luster; granular aggregate rather than distinct crystals; no reliable cleavage visible.

Identified September 11, 2026More metamorphic →

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Physical properties

Formation & geological history

A metamorphic rock formed when sulfur-rich limestone is altered by heat and fluids, commonly during contact metamorphism. Most commercial material comes from the Badakhshan region of Afghanistan; the Karachi-area locality is more likely a purchased imported pendant than locally formed rock.

Uses & applications

Used for cabochons, beads, pendants, inlay, ornaments, and historically ultramarine pigment. This is set in a metal bail and appears to be a polished cabochon.

Geological facts

High-quality lapis is vivid blue with minimal white calcite; golden pyrite inclusions can increase desirability. Pale streaks or abundant white matrix generally reduce grade.

Field identification & locations

Identify by its opaque saturated blue color, white calcite veining, and occasional metallic pyrite; a streak test is usually blue, while hardness and composition require testing. Common sources include Afghanistan, Chile, Russia, and Pakistan’s markets.