mineral

Tumbled blue-green chrysocolla (likely chrysocolla with quartz)

Chrysocolla, hydrated copper aluminum silicate; commonly intergrown with quartz, Cu₂H₂Si₂O₅(OH)₄

AI-generated identification · may be incorrect

Usually blue to blue-green with pale or dark veining, vitreous to waxy luster, and opaque to translucent appearance; Mohs hardness is 2.5–3.5 for chrysocolla, higher if quartz-rich. The rounded shape indicates tumbling and polishing; crystal structure is commonly poorly crystalline or cryptocrystalline.

Identified August 11, 2026More mineral →

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At a glance

Common name: Tumbled blue-green chrysocolla (likely chrysocolla with quartz)
Scientific name: Chrysocolla, hydrated copper aluminum silicate; commonly intergrown with quartz, Cu₂H₂Si₂O₅(OH)₄
Category: mineral
Identified: August 11, 2026
Method: Standard

AI Estimated Value

About $3–$15 for a small tumbled piece; $20–$100+ for attractive, natural, quartz-rich or high-grade specimens.

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

Forms as a secondary copper mineral in oxidized zones above copper deposits, commonly replacing or coating host rock. It is geologically young relative to its host deposits and often occurs with malachite, azurite, limonite, and quartz.

Uses & applications

Used as a lapidary stone for cabochons, beads, carvings, and tumbled specimens; it is generally unsuitable for heavy construction because of softness and weathering sensitivity.

Geological facts

The vivid color comes from copper; blue-green chrysocolla is frequently stabilized with resin or bonded to quartz to improve durability.

Field identification & locations

Identify it by its turquoise-like blue-green color, irregular banding, softness, and association with copper minerals; common sources include Arizona, Nevada, Chile, Peru, Mexico, and the Democratic Republic of Congo.