Dioptase Crystal Cluster – Vibrant Green – Tsumeb Mine, Namibia

Dioptase crystals are celebrated for their vibrant green hues, originating from the renowned Tsumeb Mine in the Kaokoveld region of Namibia. This locality is famous among mineral collectors for producing exceptional dioptase specimens, noted for their intense coloration and well-formed crystals. Dioptase is a copper cyclosilicate mineral with the chemical formula CuSiO₃·H₂O and crystallizes in the trigonal system. It has a Mohs hardness of 5 and a vitreous luster, contributing to its attractive, glassy appearance.

This specimen features transparent to translucent, richly green dioptase crystals exhibiting sharp, prismatic forms that are typical of material from Tsumeb. The crystals’ vivid color and clarity make them visually striking, ideal for display within a mineral collection. Due to the closure of the Tsumeb Mine and the rarity of new finds, dioptase specimens from this locality have become increasingly scarce, enhancing their desirability among collectors.

When handling dioptase, it is advisable to avoid exposure to acids and prolonged moisture to preserve the integrity of the crystals. Displaying the specimen away from direct sunlight can also help maintain its vibrant color over time. This piece represents a classic example of Tsumeb dioptase, valued both for its geological significance and aesthetic qualities.

Namibia — copper-zone specimens (dioptase, malachite, calcite) from the Tsumeb / Kaokoveld region.