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Mineral Specimens with Dioptase
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7.2 x 4.9 x 2.4 cm. This is a rich Tsumeb dioptase with a good deep green color. It is actually a thick matrix-free crust of crystals.
3.4 x 3.1 x 2.8 cm. A cluster of fine crystals of dioptase from Tsumeb. The crystals have fine luster and classic green color. There is a large terminated crystal here measuring 1.5 cm.
3.0 x 2.8 x 1.4 cm. A dioptase specimen from the tribal area of Kaokoveld. The color and luster of these crystals is very "Tsumeb-like", with the largest measuring just over one centimeter.
4.5 x 3.5 x 1.3 cm. This piece hosts a few patches of vibrant emerald green, acicular Dioptase crystals associated with minor pale orange bladed Wulfenite crystals on matrix. Ex. Richard Kosnar Collection.
10.7 x 8.3 x 4.6 cm. This particular specimen is comprised of very sharp, rich emerald green color Dioptase crystals with a secondary coating of smaller Dioptase crystals.
9.3 x 7.1 x 4.4 cm. This is a fine, sparkling dioptase specimen from Tsumeb. It gets its unusually intense color from the fact that the crystals are small, and so they are like a sheet of tiny gems. The light can get through them, unlike with specimens that have larger crystals that are impenetrable to light. The matrix is also extremely sculptural, with wavy arms and projections - rather than being a flat plate.
8.2 x 5.8 x 5.5 cm. This Tsumeb dioptase is a very elegant and sculptural piece, with gemmy crystals to over 1 cm, perched on an attractive matrix. The matrix is coated with sparkling, drusy calcite for contrast. Ex. George Elling Collection.
7.5 x 7 x 4.5 cm. A large plate of deep green crystals of dioptase from Congo. The crystals here measure to around 0.5 cm and are highly lustrous. The matrix has a pleasing concave structure to it, so the specimen is nicely 3-dimensional rather than being a flat plate.
3.6 x 3.4 x 2.1 cm. An aesthetic, two-sided dioptase miniature from Reneville, Republic of Congo. Two intergrown, very glassy and gemmy, dark emerald-green dioptase crystals to 1.6 cm dominate this piece from this classic locality. A scattered bit of chrysocolla is a nice accent and the dioptase crystals beautifully rest on matrix. Ex. Rob Smith Collection.
5.2 x 5.2 x 4.5 cm. Most people think of Tsumeb when they think of dioptase, or perhaps Congo, but this locality in Russia is actually the TYPE locality. Here are dozens of gemmy little crystals, of an intense Tsumeb-like green and wonderful luster, on a contrasting stony matrix.
6.9 x 5.9 x 5.5 cm. Though showing some damage, it is an extremely rich and quite sizeable specimen, in fact very little matrix and mostly solid dioptase. And, there are some good-sized crystals here - to 0.7 cm along the edge.
3.2 x 1.4 x 1.4 cm. This is a single huge compound crystal of dioptase - just extremely rare in this size (nearly an inch and a half long). Though it is from Congo, it has fine "Tsumeb-like" color and luster over most of its surface, though there are some jumbly areas where subcrystals have formed and natural clean contact on one side where it grew against another crystal.
2.2 x 1.9 x 1.5 cm. Pimbi Hill, Mindouli, Republic of Congo has put out a small number of outstanding dioptase specimens. This fine thumbnail features gemmy and lustrous, dark emerald-green dioptase crystals in a very aesthetic pattern. Material of quality dates from the 1950s to mid-1970s. Ex. Dick Jones Collection.
Two extremely sharp dioptase crystals to 1 cm in size, perched on contrasting crystal calcite matrix 3.3 x 2.3 x 1.3 cm
8.8 x 6.7 x 4.4 cm. Dioptase is known from a few world localities in superb quality specimens, but recently there was a find of new material in the Pool Region of the Congo. These specimens show great color, with larger sized crystals and good gemminess. This particular specimen is comprised of very sharp, highly lustrous, rich emerald green color Dioptase crystals measuring up to 1.0 cm on matrix forming a very attractive overall specimen. This find seemed to be somewhat limited, and hopefully will produce more specimens.
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Rob Lavinsky, rob@irocks.com
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share specimen![Dioptase from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-193930a.jpg]](db_pics/mdpics/MD-193930a.jpg)
![Dioptase from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-193930b.jpg]](db_pics/mdpics/MD-193930b.jpg)
![Dioptase from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-195257a.jpg]](db_pics/mdpics/MD-195257a.jpg)
![Dioptase from Kaokoveld Plateau, Kunene Region, Namibia [db_pics/mdpics/MD-195410a.jpg]](db_pics/mdpics/MD-195410a.jpg)
![Dioptase from Kaokoveld Plateau, Kunene Region, Namibia [db_pics/mdpics/MD-195410b.jpg]](db_pics/mdpics/MD-195410b.jpg)
![Dioptase, Wulfenite from Mammoth-Saint Anthony Mine (Mammoth-St Anthony Mine; Mammoth Mine; St. Anthony Mine), St. Anthony deposit, Tiger, Mammoth District, Pinal Co., Arizona, USA [db_pics/mdpics/MD-196049a.jpg]](db_pics/mdpics/MD-196049a.jpg)
![Dioptase, Wulfenite from Mammoth-Saint Anthony Mine (Mammoth-St Anthony Mine; Mammoth Mine; St. Anthony Mine), St. Anthony deposit, Tiger, Mammoth District, Pinal Co., Arizona, USA [db_pics/mdpics/MD-196049b.jpg]](db_pics/mdpics/MD-196049b.jpg)
![Dioptase from Kimbedi, Pool Region, Republic of Congo (Brazzaville) [db_pics/mdpics/MD-196061a.jpg]](db_pics/mdpics/MD-196061a.jpg)
![Dioptase from Kimbedi, Pool Region, Republic of Congo (Brazzaville) [db_pics/mdpics/MD-196061b.jpg]](db_pics/mdpics/MD-196061b.jpg)
![Dioptase from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-196783a.jpg]](db_pics/mdpics/MD-196783a.jpg)
![Dioptase, Calcite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-197439a.jpg]](db_pics/mdpics/MD-197439a.jpg)
![Dioptase from Tantara Mine, Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) [db_pics/mdpics/MD-200965a.jpg]](db_pics/mdpics/MD-200965a.jpg)
![Dioptase from Tantara Mine, Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) [db_pics/mdpics/MD-200965b.jpg]](db_pics/mdpics/MD-200965b.jpg)
![Dioptase from Brazzaville (Renéville; Djoué), Brazzaville Department (Renéville Department), Republic of Congo (Brazzaville) [db_pics/mdpics/MD-203229a.jpg]](db_pics/mdpics/MD-203229a.jpg)
![Dioptase from Altyn-Tyube (Altyn-Tube) deposit, Kirghiz Steppes (Asiatic Steppes), Qaraghandy Oblysy (Karaganda Oblast'), Kazakhstan [db_pics/mdpics/MD-203919a.jpg]](db_pics/mdpics/MD-203919a.jpg)
![Dioptase from Brazzaville (Renéville; Djoué), Brazzaville Department (Renéville Department), Republic of Congo (Brazzaville) [db_pics/mdpics/MD-207254a.jpg]](db_pics/mdpics/MD-207254a.jpg)
![Dioptase from Brazzaville (Renéville; Djoué), Brazzaville Department (Renéville Department), Republic of Congo (Brazzaville) [db_pics/mdpics/MD-207254b.jpg]](db_pics/mdpics/MD-207254b.jpg)
![Dioptase from Brazzaville (Renéville; Djoué), Brazzaville Department (Renéville Department), Republic of Congo (Brazzaville) [db_pics/mdpics/MD-208773a.jpg]](db_pics/mdpics/MD-208773a.jpg)
![Dioptase from 'Mbumba, Pimbi hill, Sanda, Mindouli, Pool Region, Republic of Congo (Brazzaville) [db_pics/mdpics/MD-208811a.jpg]](db_pics/mdpics/MD-208811a.jpg)
![Dioptase, Calcite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-20913a.jpg]](db_pics/mdpics/MD-20913a.jpg)
![Dioptase from Kimbedi, Pool Region, Republic of Congo (Brazzaville) [db_pics/mdpics/MD-210622a.jpg]](db_pics/mdpics/MD-210622a.jpg)