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Malachite is copper carbonate hydroxide and a highly decorative copper mineral, recognized by its rich emerald to deep green color, silky to vitreous luster, and distinctive banded, botryoidal, stalactitic, fibrous, or velvety crystal habits. Fine specimens may show dramatic concentric zoning, polished chatoyance, sharp pseudomorphs, or associations with azurite, chrysocolla, cuprite, and native copper. Collectors value malachite for its intense color, sculptural forms, bold patterning, copper-mining provenance, and strong display impact. Exceptional examples from the Democratic Republic of Congo, Namibia, Morocco, Russia’s Urals, Arizona, and Australia can range from elegant miniatures to commanding cabinet specimens.