David K. Joyce Minerals

Tsumeb, Namibia, Dioptase

Dioptase a copper silicate, is one of the most beautiful minerals to emerge from Tsumeb. The hexagonal prisms, usually terminated by a rhombohedra, are classic Tsumeb specimens. Here are some nice smaller specimens. The photo's do not do the colour justice. In almost all cases, the crystals are a richer, more emerald green than I have managed to capture.

All prices in Canadian dollars. For payment in US$, deduct 20% or multiply by 0.8.

Click on any of the following thumbnails to view a larger image of the specimen.

Dioptase, CalciteTsumeb, Namibia, Dioptase
  • Item #13939
  • Dioptase, Calcite
  • 2.9x1.9x0.9 cm
  • Largest Crystal Size: d-6mm, c-micro
  • $35.00
  • Tsumeb

  • Namibia
  • This plate of emerald-green dioptase crystals is sprinkled with tiny crystals of a carbonate that I think is calcite. Different!
Dioptase, MalachiteTsumeb, Namibia, Dioptase
  • Item #13938
  • Dioptase, Malachite
  • 3.5x2.7x2.3 cm
  • Largest Crystal Size: 1.5mm
  • $35.00
  • Tsumeb

  • Namibia
  • Beautiful blue-green crystals of dioptase are scattered around this thick plate of white dolomite and associated with nests/sprays of light green malachite.
DioptaseTsumeb, Namibia, Dioptase
  • Item #13936
  • Dioptase
  • 3.1x2.5x1.2 cm
  • Largest Crystal Size: 2mm
  • $25.00
  • Tsumeb

  • Namibia
  • A shallow vug in this solid quartz matrix is lined with brilliant, emerald-green dioptase crystals.
DioptasaTsumeb, Namibia, Dioptase
  • Item #17825
  • Dioptasa
  • 9.3x6.4x4.3 cm
  • Largest Crystal Size: 6mm
  • $75.00
  • Tsumeb Mine
  • Tsumeb
    Namibia
  • A gorgeous cluster of deep, emerald-green dioptase crystals on very coarse creamy calcite. There is a fair amount of bruising on the crystals, thus the low price. It still looks great, though!
Dioptase, CalciteTsumeb, Namibia, Dioptase
  • Item #16917
  • Dioptase, Calcite
  • 3.4x3.0x2.8 cm
  • Largest Crystal Size: 3mm
  • $65.00
  • Tsumeb Mine
  • Tsumeb
    Namibia
  • A sweet, little dioptase specimen showing the electric-blue-green dioptase crystals on white calcite. Classic!
Dioptase, Dolomite, Goethite, QuartzTsumeb, Namibia, Dioptase
  • Item #16937
  • Dioptase, Dolomite, Goethite, Quartz
  • 3.2x2.1x2.8 cm
  • Largest Crystal Size: 3mm
  • $35.00
  • Tsumeb Mine
  • Otavi
    Namibia
  • The quartz vug at the front of this piece shows emerald-green dioptase crystals associated with botryoidal goethite and white, curved crystals of dolomite.
DioptaseTsumeb, Namibia, Dioptase
  • Item #17129
  • Dioptase
  • 6.4x5.7x3.7 cm
  • Largest Crystal Size: 5mm
  • $50.00
  • Tsumeb
    Namibia
  • Deep emerald green dioptase makes up most of this specimen. It is covered with crystals all around but the top has the best. The bottom has a partial coating of a brown botryoidal mineral. Overall, the piece is very rumbled but looks great! Price reflects this.
Dioptase, CalciteTsumeb, Namibia, Dioptase
  • Item #17131
  • Dioptase, Calcite
  • 10.3x6.6x6.9 cm
  • Largest Crystal Size: 12mm
  • $250.00
  • Tsumeb
    Namibia
  • This one is different! The front of it is covered with well formed dioptase crystals. Very showy. There is an area in the middle that looks corroded but it is not. It is an area of tiny calcite and dioptase crystals thickly sprinkled on the larger crystals. Another smaller cavity of dioptase crystals on the bottom. Nice!
Dioptase, CalciteTsumeb, Namibia, Dioptase
  • Item #17132
  • Dioptase, Calcite
  • 8.5x4.2x4.4 cm
  • Largest Crystal Size: 5mm
  • $250.00
  • Tsumeb
    Namibia
  • A wonderful, attractive, sparkling specimen of dioptase crystals with a few small calcite crystals on the dioptase. Wonderful crystals showing deep emerald green colour and very good terminations. Shows brilliantly!
DioptaseTsumeb, Namibia, Dioptase
  • Item #17135
  • Dioptase
  • 7.3x6.3x5.9 cm
  • Largest Crystal Size: 4mm
  • $225.00
  • Tsumeb
    Namibia
  • A cavity of gorgeous dioptase crystals occurs between what appear to be prism faces of interlocking quartz crystal segments. The dioptase is a wonderful, gemmy-emerald green and shows very well in this specimen.
Dioptase, CalciteTsumeb, Namibia, Dioptase
  • Item #17136
  • Dioptase, Calcite
  • 12.1x6.0x5.8 cm
  • Largest Crystal Size: 4mm
  • $250.00
  • Tsumeb
    Namibia
  • Emerald green, lustrous dioptase crystals are draped over and around calcite crystals to create a very eye-catching display piece. This specimen has been abraded and the calcite crystals on the right side are damaged as are some of the dioptase crystals. Pricing reflects this. Having said that, it is still a very visual piece. Displays very well!
Dioptase Tsumeb, Namibia, Dioptase
  • Item #17137
  • Dioptase
  • 5.8x4.0x3.5 cm
  • Largest Crystal Size: 8mm
  • $160.00
  • Tsumeb
    Namibia
  • This is REALLY a nice specimen! It is a concave vug of sharp, gemmy, emerald-green dioptase crystals with not a speck of damage. The piece sits perfectly for display on its own. Siper!
DioptaseTsumeb, Namibia, Dioptase
  • Item #17141
  • Dioptase
  • 8.4x7.2x5.0 cm
  • Largest Crystal Size: 9mm
  • $160.00
  • Tsumeb
    Namibia
  • An opening in the front of this coarsely cleaved calcite exposes clusters and a lining of deep, gemmy, emerald green dioptase crystals. I've shown it in one orientation in the picture but it also sits nicely for display at 180 degrees to that orientation.
DioptaseTsumeb, Namibia, Dioptase
  • Item #17142
  • Dioptase
  • 11.7x6.5x7.5 cm
  • Largest Crystal Size: 6mm
  • $450.00
  • Tsumeb
    Namibia
  • Wow! Just Wow! This very eye-catching specimen has a vug across its front that is lined with gemmy, emerald-green dioptase crystals. In the shallower parts of the vug on the left, there is a little contact damage on some of the crystals but most of the vug is gorgeous and pristine. Displays absolutely perfectly!