Dioptase and Malachite on Matrix – Mindouli, Congo

This striking collector specimen features a richly crystallised pocket of vibrant emerald-green Dioptase with contrasting velvety Malachite developed across the centre of the cavity. Sharp, highly lustrous Dioptase crystals create exceptional sparkle, while the textured Malachite adds depth and character, resulting in a beautifully balanced cabinet specimen with outstanding visual appeal.

Specimen Details

✓ Mineral: Dioptase
✓ Associated Minerals: Malachite, Matrix
✓ Locality: Kimbedi, Mindouli, Brazzaville, Republic of the Congo
✓ Crystal System: Trigonal
✓ Colour: Emerald Green with Deep Green Malachite
✓ Lustre: Vitreous (Dioptase), Silky to Velvety (Malachite)
✓ Transparency: Transparent to Translucent
✓ Crystal Habit: Well-formed Prismatic Crystals lining a natural vug
✓ Specimen Size: Approximately 72 mm × 50 mm × 38 mm
✓ Weight: 124 g

The copper deposits of Kimbedi near Mindouli are internationally recognised for producing some of the finest Dioptase specimens available. Their intensely saturated colour, sharp crystal morphology and exceptional brilliance have made this locality one of the most desirable sources of collector-quality Dioptase. The natural association with Malachite further enhances the specimen, reflecting the rich secondary copper mineralisation for which the district is renowned.

This specimen displays an attractive crystal-lined cavity densely populated with well-formed Dioptase crystals exhibiting excellent lustre and strong colour saturation. The velvety Malachite growths emerging through the centre provide an unusual focal point and create a striking contrast against the glassy crystal faces. The composition is complemented by the warm-toned matrix, giving the specimen excellent aesthetics from multiple display angles.

Combining exceptional colour, strong crystal definition, an attractive natural composition and a classic Congo locality, this is a display-quality cabinet specimen that will appeal to collectors of fine copper minerals, African mineral localities and world-class Dioptase specimens.