Tsumeb Gallery... Dioptase

Mineral Specimens For Sale From the Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa

 

 

               Dioptase                                                        Dioptase

 

One of the most recognizable species from Tsumeb is dioptase.  Specimens of dioptase are the finest known, exceeding those from the Congo and Kazakhstan in clarity and form.  Also, they commonly form in association with other species, most commonly calcite, creating a contrast in colors and forms.  A fine grouping of bright green Tsumeb dioptase on white calcite is one of the most aesthetic of all mineral combinations on earth. 

 

 

OKP-621

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OKP-621     Dioptase      Tsumeb Mine, Tsumeb,, Namibia.  Ex. Dr. Steve Chamberlain collection.  This 2.8 x 1.5 x 1.5 cm domical matrix specimen has bright, tiny, transparent dioptase crystals studding both its front and back.  No damage, displays great from any direction.  $40

 

 

 

 

 

OKO-332

OKO-332    Dioptase and Smithsonite on Calcite     Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  3 x 1.7 x 1.5 cm matrix with well dispersed crystals .4 cm each.  The crystals are gemmy and aesthetic.  No damage.  Mounted in a perky box.  $45

 

 

 

 

 

OKK-529

OKK-529    Dioptase on Dolomite   Tsumeb Mine, Tsumeb, Namibia.   Ex. Thomas Fowler collection.  An excellent matrix piece with attractive, tiny, gemmy crystals.  The piece measures 2.8 x 2.2 x 2.2 cm.  No damage, great color and luster and a great value… $140

 

 

 

 

 

 

OKK-534

Even the edges are clean....

Even the edges are clean

OKK-534    Dioptase    RESERVED   Tsumeb Mine, Tsumeb, Namibia.   Ex. Thomas Fowler collection.  An excellent matrix piece with attractive, gemmy crystals to almost 1 cm each, nicely differentiated, and very lustrous.  No damage.  Could use further cleaning. 3.4 x 2.3 x 2.4 cm.  Perfect even on edges.  Top quality specimen in all regards.  Mounted in a perky box.   $500

 

 

 

 

 

OKK-865

OKK-865    Dioptase and Cerussite    Tsumeb Mine, Tsumeb, Namibia.   Ex. Thomas Fowler collection.  3.5 x 2.7 x 1.3 cm plate of crystals.  Small spot of damage, one end scraped clean of crystals (could be trimmed off easily) and a small cerussite twin.  Mounted in a perky box.  $250

 

 

 

 

 

OKK-520

OKK-520    Dioptase     Tsumeb Mine, Tsumeb, Naminia.  Ex. Thomas Fowler collection.  Attractive, high luster crystals of dioptase stand up high on this small matrix specimen.  It measures 2.8 x 2.7 x 2.5 cm.  Large central crystal has a tiny ding on one edge otherwise the piece is in good shape.  $125

 

 

 

 

 

 

OKL-759

OKL-759     Dioptase      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia. Ex. Thomas G Fowler Collection. A large, elongated example with bright green dioptase crystals on bright white calcite. Crystals are not large, only to a few millimeters each but they are very showy. In nice condition with only one small spot of damage which is not distracting. Nicely mounted in a perky box. 12.5 x 5 x 3.1 cm. Nicely priced for one of these… $230

 

 

 

 

 

OKL-456

OKL-456     Dioptase and Smithsonite on Calcite     Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  A nice showy cabinet specimen measuring 8 x 6 x 3.2 cm.  The bright green dioptase crystal cover much of the display face.  They are small, lustrous, transparent and vibrant.  There is a druse of bright smithsonite crystals in areas. The white spot on the edge is only damaged spot and on first glance really looks like a coating… it is only with magnification that I could tell this was a damaged spot.  $600

 

 

 

 

 

 

OKL-410

OKL-410    Dioptase      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  A 6 x 4.3 x 2 cm specimen with liberal amounts of bright green dioptase coating approximately ˝ of the display face of the piece.  The lighter green strips in the central regions are not damage, they are secondary growths of smaller dioptase crystals.  The two generations of crystals in the central region are damage free and there is only peripheral contacts from removal from the rock in the mine.  $550

 

 

 

 

 

 

 

OKL-411

OKL-411    Dioptase on Smithsonite    Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  Nice gemmy, deep green dioptase on purplish white smithsonite druse.  5.7 x 4 x 3 cm overall with one side of the specimen being entirely coated and the other side having more spread out areas of crystal coverage.  Chipping is confined to the peripheral areas due to removal from rock with the interior sections being damage free.  Very nice and different from one side to the other.  $800

 

 

 

 

 

 

 

OKL-412

OKL-412    Dioptase on Smithsonite with Cerussite   Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  5.6 x 4.2 x 3.5 cm with crystals to over 1 cm each.  A well formed cerussite crystal can be found on the upper or side, of the backside of the specimen.  It is gemmy and damage free.  There are the usual edge contacts in places but the only damage is near the lower edge with one partially crushed area on a crystal and a chip on a crystal at top.  Overall, these are large gemmy crystals in great condition in a showy arrangement on smithsonite.  There are a few spots showing minor clusters of smithsonite crystals on the dioptase.  A great piece of this rare material.  $1,950

 

 

 

 

 

 

 

OKL-413

OKL-413    Dioptase     Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  This 5 x 3.9 x 2.5 cm pice has a single area coated by gemmy crystals to .4 cm each and others by dioptase druse on calcite.  There is only the slightest of wear… if it looks like there is more it is simply because the “druse” is a second generation of smaller crystals and when on the larger ones, it makes their surfaces look rough.  An excellent example for this price.   $200

 

 

 

 

 

 

OKL-414

OKL-414    Dioptase with Cerussite    Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  This attractive specimen boasts dioptase crystals to 1.2 cm and a single cerussite to 1.8 cm.  The piece measures a respectable 6.8 x 4.7 x 3 cm.  The condition is great with only the large central crystal having a small chip on its backside that is barely noticeable, even with magnification.  Great, showy specimen.   $675

 

 

 

 

 

 

OKL-415

OKL-415    Dioptase on Calcite    Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  This vug/ seam is filled by nice sized dioptase crystals and calcite.  It measures 5.4 x 3.6 x 3.1 cm overall and shows no damage.  The crystals, as with all these specimens, are vibrant, of the highest luster, and sharp.  $325

 

 

 

 

 

 

 

OKL-416

OKL-416    Dioptase and Smithsonite    Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  This nice piece is fully covered by dioptase crystals on its display face.  It measures 5 x 3.4 x 3 cm.  I only see one crystal missing in the body of the specimen, even the edges are in decent shape.  Minor overgrowths of small white smithsonite crystals in tiny clusters.  Sits on edge nicely.  $495

 

 

 

 

 

 

OKL-417

OKL-417    Dioptase on Calcite with Duftite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  5.8 x 4 x 3.2 cm overall.  Large attractive crystals to well over a cm each in maximum dimensions on clear to white calcite included, in some instances, by light green duftite.  No damage.  Edge contact only on one side, and the specimen can sit on this, although it displays equally well in several different positions.  The duftite also forms surface coatings on the matrix in a couple areas.  Miniature sized specimens don’t get much better than this!   $1,400

 

 

 

 

 

 

OKL-418

OKL-418    Dioptase on Calcite        RESERVED     Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  An attractive example with a bright coating of crystals on white calcite rhombs to 1.7 cm each.  6 x 4.2 x 3.5 cm.  I have looped this carefully and only find two miniscule crystals chipped so the condition is very good.  Most of the crystals are gemmy and all are well formed and of the highest luster.  Sit well.  Flashy specimen.     $475

 

Tsumeb Dioptase, Page 2

 

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