vivid emerald-green crystals with glassy luster, often on white calcite or quartz; highly collectible due to color, clarity, and brittleness.
Regional guide
Dioptase from Tsumeb, Namibia
, Tsumeb (Namibia): deep emerald-green crystals with bluish cast, glassy luster, sharp terminations on calcite, a collector’s prized, iconic locality.
Locality guide
Tsumeb
Tsumeb, Namibia — world-renowned locality famed for a rich copper–lead–zinc ore pipe, with dioptase on calcite, azurite blades, and smithsonite prized by colle…
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