mineral

Malachite-bearing decorative stone (possibly dyed or resin-coated)

Malachite, Cu₂CO₃(OH)₂; the underlying matrix is not identifiable from the image

AI-generated identification · may be incorrect

Turquoise-green surface with dark brown banding and blue patches; malachite has a vitreous to silky luster, monoclinic crystals, Mohs hardness 3.5–4, and specific gravity about 3.6–4.0. The smooth, uniformly colored finish may be treated, so the visible surface may not show the natural texture.

Identified October 3, 2026More mineral →

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Physical properties

Formation & geological history

Malachite forms as a secondary copper mineral in oxidized zones of copper deposits, commonly with azurite; such deposits occur in rocks of many ages. The object appears shaped and polished, and its natural versus treated surface cannot be confirmed visually.

Uses & applications

Malachite is used for ornamental objects, beads, and jewelry, though its softness and copper content require gentle care. This appears to be a decorative carved or polished piece.

Geological facts

Malachite’s vivid green color comes from copper, and natural specimens often show concentric or banded patterns. Avoid prolonged contact with acids or abrasive cleaning.

Field identification & locations

Look for distinctive green banding, a relatively soft surface, and a green streak; verify suspected malachite with a mineral test rather than relying on color alone. Major sources include the Democratic Republic of the Congo, Zambia, Russia, and Australia.