mineral

Tumbled lapis lazuli, blue-green serpentine, and sodalite (likely)

Lapis lazuli: lazurite-bearing rock, chiefly lazurite (Na₃Ca(Si₃Al₃)O₁₂S); serpentine: Mg₃Si₂O₅(OH)₄; sodalite: Na₈(Al₆Si₆O₂₄)Cl₂

AI-generated identification · may be incorrect

Three polished/tumbled stones are visible: deep royal-blue lapis lazuli, blue-green serpentine, and mottled blue-white sodalite. Typical hardness is ~5–5.5 (lapis), 2.5–5.5 (serpentine), and 5.5–6 (sodalite); vitreous to waxy luster, massive rather than visibly crystalline.

Identified September 4, 2026More mineral →

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At a glance

Common name: Tumbled lapis lazuli, blue-green serpentine, and sodalite (likely)
Scientific name: Lapis lazuli: lazurite-bearing rock, chiefly lazurite (Na₃Ca(Si₃Al₃)O₁₂S); serpentine: Mg₃Si₂O₅(OH)₄; sodalite: Na₈(Al₆Si₆O₂₄)Cl₂
Category: mineral
Identified: September 4, 2026
Method: Standard

AI Estimated Value

About $3–$15 per tumbled stone; attractive larger or unusually patterned pieces may sell for $20–$50.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Lapis forms in metamorphosed carbonate rocks; serpentine forms by hydration of ultramafic mantle rocks; sodalite crystallizes in silica-poor alkaline igneous rocks. Their ages vary widely by deposit, commonly Paleozoic to Precambrian.

Uses & applications

Used as ornamental and carving stone, beads, cabochons, pigment (lapis), and decorative tile. These appear commercially tumbled for jewelry or collecting.

Geological facts

Lapis lazuli’s blue color comes mainly from sulfur-bearing lazurite; pyrite flecks can increase its desirability. Serpentine is often green from iron- and nickel-bearing minerals.

Field identification & locations

Identify by color, streak, softness, and matrix: lapis commonly has white calcite or metallic pyrite; sodalite has white veining; serpentine is waxy and green-blue. Common sources include Afghanistan, Chile, Canada, Brazil, and the United States.