Dioptase on Calcite - image 1

Dioptase on Calcite

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Green on white is the ultimate combination for Tsumeb Dioptase specimens, and what elevates them above any other world occurrence of this rare and beautiful copper silicate species. At Tsumeb, the white can be Calcite or Dolomite, but in this instance it is the former and as well-formed rhombic crystals. The Dioptase too, is on point, in supremely glossy, gemmy emerald-green crystals, the largest of which reaches a noteworthy 1.1 cm in length, with several others of a similar proportion. The very best Tsumeb Dioptase shines much brighter than those from other occurrences, and that can clearly be seen here. At 9.6 cm in length, this is certainly a great size for display, and has all of the top attributes one would expect for a top-class Tsumeb Dioptase. This beauty comes from the generations-old Weyand Collection which was held in Tsumeb up until very recently.

Product details

SpeciesDioptase, Calcite
SizeSmall Cabinet
Dimensions9.6 x 6.7 x 3.2 cm
Added on01/17/2026
LocalityNamibia, Oshikoto Region, Tsumeb

Known provenance

DateCollectorAcquisition price
07/2026Unknown Owner$5,000.00
—Crystal ClassicsNot disclosed

Learn more

Dioptase
Mineral guide
Learn about Dioptase
vivid emerald-green crystals with glassy luster, often on white calcite or quartz; highly collectible due to color, clarity, and brittleness.
Dioptase
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.