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. 

 

 

 

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

 

 

 

 

OKN-110

OKN-110    Dioptase    Tsumeb Mine, Tsumeb, Namibia.  Ex. Harold L. Dibble collection.  A beautiful miniature measuring 4.5 x 3.3 x 2.5 cm.  Large crystals to 1.6 cm each of the very high luster and nice translucence expected of this material.  Front center has a couple chipped crystals and back as well.  All the big crystals along the top are complete and very nice. so even with the damage mentioned it is a specimen worth having.  Mounted on an acrylic base.  $375

 

 

 

 

 

 

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    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-523

OKK-523    Dioptase on Dolomite    Tsumeb Mine, Tsumeb, Namibia.   Ex. Thomas Fowler collection.  An excellent matrix piece with attractive, gemmy crystal, the largest of which measures 1.5 cm long, nicely differentiated, and very lustrous.  The piece measures 3 x 2.2 x 2 cm.  Contact on bottom termination of largest crystal… it sits nicely on this edge.  No damage.  $300

 

 

 

 

 

 

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

 

 

 

 

 

OKL-999

OKJ-999    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 2.8 x 1.9 cm.  Large central crystal group all damage free but a crystal lower on the matrix is gone.  Mounted in a perky box.  $120

 

 

 

 

 

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 ½ 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 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

 

 

 

 

 

 

 

OKL-419

OKL-419    Dioptase on Calcite with Duftite and Smithsonite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  An attractive piece of mixed colors measuring 6 x 4.2 x 3.2 cm.  Very asthetically layed out with nice contrasts of color between the light and deep greens on white.  Scattered amongst the crystals of dioptase are tiny clusters of white smithsonite crystals.  There is a patch of white calcite broken of in the central area of the piece, but still this should remain a desirable specimen.  A domical specimen which views great from any direction except back, which is just okay.  $600

 

 

 

 

 

 

 

OKL-420

OKL-420    Dioptase on Calcite with Duftite and Smithsonite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  This damage free piece measures 6.6 x 4.5 x 3.1 cm overall.  It displays beautifully having lots of flash and visual complexity between the different species.  Good views of problem free coatings of super high luster crystals.  Excellent specimen.  $500

 

 

 

 

 

 

OKL-421

Top view

OKL-421    Dioptase on Smithsonite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  Here is a real beauty!  A slightly domical piece with very different, yet almost equally displayable front and back.  The front shows dioptase on brown smithsonite druse.  A couple areas show very minor chipping. The back is flat with a heavy coating of dioptase.  Back shows a chipped area at top.  Other area is a coating of fibrous malachite or maybe brochaite.  Although there is a tiny amount of damage on each side the specimen is still of very high quality.  It measures in at 6.7 x 4.5 x 2.7 cm.  It sits on edge for display nicely.  Top view is excellent and side views are only okay showing contacts.  Nice!   $1,800

 

 

 

 

 

OKL-440

OKL-440      Dioptase on Smithsonite     Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  Beautiful dioptase crystals widely scattered over the entire surface of matrix coated by white to tan colored smithsomite crystals.  5.8 x 3.8 x 1.7 cm with a slightly domical form..  Great condition with only a very tiny crystal showing damage.  Tough to even notice this.  Great example!   $375

 

 

 

 

 

 

OKL-442

OKL-442      Dioptase and Smithsonite on Calcite     Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  Nice bright, transparent dioptase with tiny white smithsonite crystals on larger white calcites.  Very high luster and nice aesthetics to the piece which measures 3.7 x 3.1 x 2.2 cm overall.  The tiniest of Wilbers on one small dioptase crystal only visible with 10 x aid.  Domical form.  Displays great.  $260

 

 

 

 

 

 

 

 

OKL-444

OKL-444      Smithsonite on Dioptase on Calcite     Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  A fine miniature measuring 4.5 x 3 x 2.3 cm.  Very small clusters of tiny clear smithsonite crystal clusters sit amongst a heavy coating of small bright green dioptase.  This in turn rests on white calcite crystals.  No damage.  Sharp piece!  $225

 

 

 

 

 

 

OKL-445

OKL-445      Smithsonite on Dioptase with Duftite on Calcite     Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  A wonderful assemblage, all in damage free crystals.  4.8 x 4 x 3 cm overall.  Sits nicely several ways for display.  Excellent example.  $350

 

 

 

 

 

 

OKL-446

OKL-446     Dioptase with Duftite and Calcite     Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  5.1 x 4 x 3.2 cm with crystals to .9 cm each.  Nice gemmy crystals spread out in an attractive manner on the matrix of this specimen.  The damage is to a couple of crystals isolated to one end as seen in the images.  Not overly distracting given the strong aesthetics of the entire piece.   A nice value at   $325

 

 

 

 

 

 

OKL-443

OKL-443      Dioptase on Calcite    Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  A damage free 4.5 x 3.5 x 3.2 cm miniature sized piece with a fully mineralized frontal face.  The bright, gemmy dioptase sit with clear calcites, also of exceptionally high luster.  A fantastic display of this rare material.  Sits perfectly.  This is a great one for those seeking perfect miniatures.  $380

 

 

 

 

 

 

OKL-396

OKL-396    Dioptase on Calcite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  A seam filled by nice bright crystals to .7 cm each.  Measures 5.9 x 3.7 x 2.4 cm.  Edge contacts are broken crystals.  $200

 

 

 

 

 

 

 

OKL-397

OKL-397    Dioptase on Calcite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  A 6.1 x 4 x 2.5 cm specimen with nice crystals and damaged crystals too.  Priced accordingly.  $175

 

 

 

 

 

 

 

OKL-395

OKL-395    Dioptase on Calcite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  This 5 x 4 x 4 cm piece has bright crystals to 1 cm each in a single small grouping on the top center.  These are on calcite and several edge crystals in the group are damaged as can be seen.  Still a specimen that may fit into someone’s collection and price range.  $120

 

 

 

 

 

 

 

OKL-394

OKL-394    Dioptase, Smithsonite, Calcite, and Duftite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  This 5.2 x 4.5 x 3.5 cm specimen with crystals to .9 cm each.  The matrix is composed of crystallized smithsonite with tiny rhombs of clear calcite on it.  This was followed by minor duftite and the beautiful dioptase crystals.  One side of the specimen shows some damage but the remaining areas are very clean and aesthetic.  $500

 

 

 

 

 

 

 

 

OKL-393

OKL-393    Dioptase on Calcite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  A 7.2 x 5.2 x 3.5 cm specimen having crystals to almost 1 cm each.  Minor wulfenite mixed in with the duftite.  Damage on edge of opening due to removal from rock as would be expected.  Very nice.  $450

 

 

 

 

 

 

 

 

OKL-392

OKL-392    Dioptase and Duftite on Calcite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  There are several mounds of calcite coated by dioptase forming this piece with minor duftite showing mostly along its perimeter.  The large specimen measures 8 x 7.2 x 5 cm.  This one sits beautifully and is quite attractive.  Most of the crystals have a slightly stepped appearance to their surfaces.  I can see no damage even on high points with magnification.  Fantastic example.  $950

 

 

 

 

 

 

 

OKL-390

OKL-390    Dioptase with Cerussite and Smithsonite??      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  This is an outstanding display specimen of rich color with thick coverage of dioptase on its display surfaces.  It is very three dimensional and partially crystallized on the back.  One side is just dioptase with some minor cerussite peaking through and the other has some coatings of what appears to be a light green smithsonite druse.  8.5 x 5 x 4 cm.  Only edges show the typical breakage from removal with the primary crystalline areas being damage free.  A great example of this uncommon and desirable material.   $1,800

 

 

 

 

 

 

 

OKL-389

OKL-389    Dioptase on Calcite with Duftite     Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  This attractive specimen dioptase and duftite in green (totally different shades!) on white calcite.  The specimen measures 6 x 4 x 4.4 cm.  All crystals other than the calcites are small and dispersed over the entire specimen.  It domical and views well a couple of different ways.  The dioptase crystals are gemmy.  Damage free and very aesthetic.   $280

 

 

 

 

 

 

 

OKL-388

OKL-388    Dioptase on Calcite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  This 7 x 4.4 x 2.3 cm specimen has one hollow area filled by bright green crystals to over 1 cm each.  They are on white calcite.  There is damage to the edge crystals and others so is priced accordingly.   $140

 

 

 

 

 

 

 

OKL-387

OKL-387    Dioptase on Calcite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  6.4 x 4.3 x 3.2 cm specimen with a druse of small crystal on white calcite rhombs.  The crystals are small but exceptionally bright and gemmy.  They make for a fine contrast and an excellent display piece which sits and views well.  Minor coverage on one side as well as primary display face.   $390

 

 

 

 

 

 

 

OKL-386

OKL-386    Dioptase on Calcite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.   A 6.4 x 4.5 x 3.8 cm specimen entirely coated on its display face by nice transparent to translucent, high luster crystals to .6 cm each.  There are two high spots with a few missing crystals but overall this remains a very attractive and desirable piece.  Well spaced crystals of the highest quality on a contrasting crystallized matrix. $475

 

 

 

 

 

 

 

OKL-385

OKL-385    Dioptase on Calcite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  7 x 4.7 x 4 cm specimen with a druse of small crystal on white calcite rhombs.  The crystals are small but exceptionally bright and gemmy.  They make for a fine contrast and an excellent display piece which sits and views well.   $390

 

 

 

 

 

OKL-496

OKL-496     Dioptase on Calcite        RESERVED    Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  An amazing display of the highest luster and great form with crystals to a cm.  Edge contact is minor and remainder of specimen is damage free.  The crystals are gemmy and bright, beautifully dispersed on the contrasting calcite, and the price is give- away!  3 x 2.4 x 2.2 cm.  Crystallized on all sides.  Displays from any view nicely.  Mounted in a perky box.  Only $175

 

 

 

 

 

OKH-726

OKH-726    Dioptase      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  A nice three dimentional mound of crystals measuring 3.6 x 2.5 x 2 cm.  Views nice from all sides, has edge contacts, flat base, and the usual high luster and sharply formed crystals.  $185

 

 

 

 

 

OKL-368

OKL-368    Smithsonite on Dioptase and Brochantite included Calcite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  This is quite the assemblage in a very aesthetic showing.  The calcites are quite clear but in most cases covered by smithsonite concealing the fact.  Included calcites can be seen on the edge of the piece and clearly show acicular brochantites of a vibrant blue color.  The dioptase are magnificent, as they usually are from this location and the overall variation in texture, color, and form is exciting.   No damage and only one edge contact which it stands nicely on.  4.4 x 3.2 x 2 cm.  The photos don’t do this piece justice as it is one of the most attractive miniatures in the collection.  $450

 

 

 

 

 

 

OKL-443

OKL-443      Dioptase on Calcite    Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  A damage free 4.5 x 3.5 x 3.2 cm miniature sized piece with a fully mineralized frontal face.  The bright, gemmy dioptase sit with clear calcites, also of exceptionally high luster.  A fantastic display of this rare material.  Sits perfectly.  This is a great one for those seeking perfect miniatures.  $380

 

 

 

 

 

OKL-615

OKL-615    Dioptase    Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.   4.7 x 3.5 x 3 cm with crystals to 1.2 cm each.   The specimen is vibrant and attractive.  The large crystals are very translucent and the only distraction is a small spot of contact near to one of the edges.  All the crystals are in wonderful condition.  $250

 

 

 

 

 

OKL-630

OKL-630      Dioptase on Calcite     Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  Beautiful green crystals of good translucence to transparency on clean white calcite crystals… the dioptase crystals are to .7 cm each and the piece measures 4 x 3.5 x 2.8 cm.  Fantastic miniature!  $325

 

 

 

 

 

OKL-464

OKL-464    Dioptase on Calcite      Tsumeb Mine, Tsumeb, Otjikoto Region, Namibia, South West Africa.  Ex. Thomas G. Fowler collection.  A nice plate that sits on edge for display.  Small crystals but attractive, gemmy and damage free.  6.4 x 4 x 2.1 cm.  Great coverage.  $325

 

Tsumeb Dioptase, Page 2

 

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