Elongated Dioptase Crystal cluster – 49 mm

Description

This 49mm specimen is a striking “blade” style piece, offering a wonderful contrast between the crystalline dioptase and the lighter host matrix. The elongated shape makes it a very dynamic addition to a display.

Elongated Dioptase Crystal cluster – 49 mm

Locality: Republic of the Congo (DRC)

Dimensions: 49 mm x 26 mm x 22 mm

Mineralogical Highlights

This 49 mm cabinet specimen is characterized by its tapered, wedge-shaped form and a deep central channel of mineralization. It displays a beautiful variety of crystal sizes, from fine drusy coatings on the edges to larger, well-defined rhombohedral crystals in the center.

• Crystal Habit: The center of the piece features a protected “vug” or cavity filled with sharp, blocky dioptase crystals. These central crystals are exceptionally dark and saturated, providing a dramatic contrast to the thinner, brighter green layers on the periphery.

• Color Contrast: The specimen is framed by a white-to-tan silicified matrix, which serves to “pop” the electric emerald-green of the dioptase. This framing gives the piece a very clean and professional aesthetic.

• Luster: High vitreous luster. The deeper crystals in the center of the specimen possess a “velvet-midnight” green quality that catches the light with intense, sharp flashes from within the cavity.

• Structure: A robust, elongated specimen that stands out for its unique “mountain peak” silhouette.

Technical Summary

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

• Hardness: 5 (Mohs Scale)

• Crystal System: Trigonal / Rhombohedral

• Condition: Natural and structurally sound; featuring deep, intact crystal cavities.