4.3" Gemmy Dioptase Crystal Cluster on Quartz - Sanda Mine, Congo

Gemmy Dioptase Crystal Cluster on Quartz - Sanda Mine, Congo #209338

This is a stunning cluster of gemmy dioptase crystals on a quartz crystal encrusted matrix, collected from the Sanda Mine (Sanda Hills occurrences) of the Republic of the Congo. The entire specimen is 4.3" wide and the dioptase is a lustrous, emerald-green color with wonderful translucency. Veins of sky-blue shattuckite can be seen at along the top of the matrix, making for an exceptionally colorful specimen.

The base of the rock has been cut flat for presentation.

About Dioptase

Dioptase is a showstopper in the mineral world—an electrifying copper silicate known for its mesmerizing, emerald-green color that seems to glow from within. Its vivid hues rival even the finest emeralds, but it’s the crystal clarity and intense brilliance that make collectors’ hearts race. Found in arid, copper-rich environments like the deserts of Namibia and Kazakhstan, dioptase forms stunning prismatic crystals that sparkle like tiny green beacons against contrasting matrix rock. While too soft for most jewelry, it’s a favorite among mineral collectors and museums for its sheer visual impact. Dioptase isn’t just a mineral—it’s nature’s answer to green fire in crystal form.

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