2.5" Lustrous Dioptase Crystal Epimorph - Congo

Lustrous Dioptase Crystal Epimorph - Congo #303841

This is a cluster of lustrous dioptase crystals collected from the Mindouli District in the Republic of the Congo. These epimorphs occur as dioptase forms over an unidentified, botryoidal mineral, likely being plancheite or shattuckite. The entire specimen is 2.5" wide and the dioptase is a gorgeous, emerald-green color.

It has been mounted to an acrylic display base with mineral tack.

Dioptase is an uncommon mineral, found mostly in desert regions where it forms as a secondary mineral in the oxidized zone of copper sulfide mineral deposits. This copper-based mineral forms small rhombohedral crystals, typically less than 0.75 centimeters in length. It is popular with mineral collectors due to its vibrant color and it is occasionally cut into small emerald-like gems.

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