metamorphic

Lapis Lazuli (Low-grade)

Lapis Lazuli (Aggregate of Lazurite, Calcite, and Pyrite)

AI-generated identification · may be incorrect

Hardness: 5-5.5 (Mohs); Color: Mottled deep blue and white; Luster: Vitreous to greasy; Structure: Granular/Massive; Cleavage: None

Hardness: 5-5
Color: Mottled deep blue and white
Luster: Vitreous to greasy

Identified July 18, 2026More metamorphic →

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Physical properties

Hardness: 5-5.5 (Mohs); Color: Mottled deep blue and white; Luster: Vitreous to greasy; Structure: Granular/Massive; Cleavage: None

Formation & geological history

Formed through contact metamorphism where limestone or dolostone is altered by heat and chemicals from igneous intrusions. Major sources are the Sar-e-Sang mines in Afghanistan, dating back over 6,000 years.

Uses & applications

Used primarily in jewelry, ornamental carvings, and historically as the pigment ultramarine for fine art.

Geological facts

Unlike most gemstones which are minerals, Lapis Lazuli is a rock composed of multiple minerals. The blue comes from lazurite, the white from calcite, and the gold flecks from pyrite.

Field identification & locations

Identify by its distinctive royal blue color often mixed with white calcite veins and metallic gold pyrite flecks. This specific round-cut specimen is lower grade due to the high calcite (white) content.