Deep-Teal Dioptase Crystal Cluster – 25mm

Description

This 25mm specimen is a superb “Toenail” or large “Thumbnail” sized piece. It is notably dense, featuring more robust crystal structures than the typical drusy coatings often found in this size range.

Deep-Teal Dioptase Crystal Cluster – 25mm

Locality: Republic of the Congo (DRC)

Dimensions: 25 mm x 20 mm x 15 mm

Mineralogical Highlights

Despite its compact 25mm size, this specimen packs significant visual impact due to its heavy mineralization and sharp crystal geometry.

• Crystal Habit: Composed of well-defined rhombohedral crystals that have intergrown into a solid, high-relief cluster. The crystals are larger and more distinct than standard micro-crystalline specimens of this size, showing off the mineral’s natural “blocky” habit.

• Color: A rich, saturated “electric” emerald-green. The color is deep and consistent throughout the specimen, leaning toward the darker, more mysterious teal tones that define the Congolese locality.

• Luster: Possesses a vitreous to sub-vitreous luster. The larger, flat crystal faces provide clean, mirror-like reflections that give the piece a sophisticated, “gemmy” appearance.

• Structure: A very solid, sturdy specimen with minimal matrix exposure, providing maximum color saturation from every angle.

Technical Summary

• Mineral: Dioptase ($CuSiO_{2}(OH)_{2}$)

• Hardness: 5 (Mohs Scale)

• Crystal System: Trigonal

• Condition: Natural and untreated, with excellent structural integrity.