mineral

Malachite (possibly chrysocolla-bearing)

Malachite, Cu₂CO₃(OH)₂; the blue-green areas may include chrysocolla, Cu₂H₂Si₂O₅(OH)₄

AI-generated identification · may be incorrect

Bright turquoise-green, opaque, with a typically silky to dull luster and botryoidal or massive texture; Mohs hardness 3.5–4, perfect cleavage, and specific gravity about 3.6–4.0. The specimen appears tumbled or naturally rounded, though image-based identification is not definitive.

Identified September 5, 2026More mineral →

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At a glance

Common name: Malachite (possibly chrysocolla-bearing)
Scientific name: Malachite, Cu₂CO₃(OH)₂; the blue-green areas may include chrysocolla, Cu₂H₂Si₂O₅(OH)₄
Category: mineral
Identified: September 5, 2026
Method: Standard

AI Estimated Value

About $5–$25 for a small common tumbled piece; $30–$200+ for well-banded, attractive malachite or malachite–chrysocolla 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 of copper deposits, commonly replacing or coating sulfide ores; it is generally geologically young relative to its host rocks. Common associates include azurite, chrysocolla, cuprite, and limonite.

Uses & applications

Used as an ornamental stone, pigment, lapidary material, and minor gemstone; historically used for green paint and decoration. Avoid prolonged skin contact with dust or acids because copper minerals can be toxic or reactive.

Geological facts

Malachite often shows concentric banding and can effervesce weakly in dilute hydrochloric acid. Its vivid green color results from copper, while chrysocolla admixture produces bluer turquoise tones.

Field identification & locations

Common localities include the Democratic Republic of the Congo, Zambia, Russia, Australia, Arizona, and New Mexico. Field clues are vivid green color, high density, softness, and green streak; do not lick or grind it, and confirm with hardness, streak, and chemical testing.