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Mineral Specimens with Dioptase
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3.7 x 2.4 x 1.3 cm. An outstanding miniature of sharp, well-defined Dioptase crystals on a Quartz matrix. The Dioptase crystals range up to 1.1 cm in length, and have superb luster and color. What makes this so incredibly special, though, is how well the Dioptase crystals stand up on matrix. Ex. Charlie Key.
11.5 x 8.5 x 5 cm. A fine specimen of gemmy, lustrous Dioptase from the Kaokoveld Region. The largest of these "gems" is 1.5 cm, and they flash a brilliant green in the light. Contrast is enhanced by the powdery blue coating of chrysocolla, all on a quartz matrix. Ex. Charlie Key.
4.8 x 3.9 x 2.4 cm. Sparkly, emerald-green dioptase microcrystals cover the calcite matrix on this fine piece from the Tsumeb Mine. This is a highly representative example of the desirable combination from this renowned locale. Ex. Wes Parker Collection.
4.8 x 4.3 x 4.2 cm. Glassy and gemmy, classic green dioptase crystals, to 1 cm in length, are aesthetically emplaced high on matrix. This is from the type locality of dioptase, first found here before 1800. Many people assume the first dioptase came from Africa, from Tsumeb, but it did not.
5.6 x 5.3 x 4.7 cm. This is a very rare specimen. These were found in the early 1980s, and the specimen consists of small calcite crystals on dioptase that were completely replaced by the copper mineral plancheite and turned a rich blue in color. This is only at one end of the piece. At the other end, the calcites have been replaced by chrysocolla, I think; or at least so heavily coated one cannot tell and it’s a moot point visually. Ex. Ed Swoboda Pseudomorph Collection (see MinRec Nov/Dec 1997). He sold it to Carter Rich in 1999, who sold this to George Loud right after.
7.0 x 5.5 x 3.7 cm. A large and stunning specimen of classic old Congo dioptase, in a specimen of rare size and caliber for the locality. Reneville is known for large blocky crystals as you see here. They have not quite the lustre of a Tsumeb dioptase (or the best Kaokoveld pieces), but have even deeper green color to them. This would represent a specimen of excellent quality, most likely from the late 1960s or early 1970s I am told. Ex. Charlie Key.
4.8 x 2.6 x 2.1 cm. Gemmy, sparkly, emerald-green dioptase crystals richly cover the 3-dimensional gossan matrix on this fine miniature from the Tsumeb Mine. The crystals reach 5 mm on this classic material. Ex. Wes Parker Collection.
8.0 x 4.8 x 3.2 cm. Scintillating, gemmy and lustrous, rich emerald-green dioptase crystals to 6 mm cover the undulating matrix on this fine specimen from the Tsumeb Mine. Ex. Saller Collection of Germany.
3.5 x 2.3 x 1.2 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 excellent gemminess. This particular specimen is comprised of very sharp, highly lustrous, gemmy, rich emerald-green color Dioptase crystals forming a very attractive "spray"-like specimen. The largest crystal measures 2.1 cm long, which is very good sized for this locality. This find seemed to be somewhat limited, and hopefully will produce more of this fine Dioptase.
2.5 x 2.5 x 1.4 cm. A superb thumbnail of a cluster of extremely gemmy and lustrous, emerald-green dioptase crystals to 1.1 cm aesthetically perched on a thin wedge of sparkly light sea-green smithsonite microcrysals and beautifully accented with a couple of colorless calcite rhombs. This very interesting Tsumeb combination specimen is from the Dr. Fred Pough Collection and is older material.
5.8 x 5.2 x 3.2 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. The best of these specimens show great color, with larger sized crystals and excellent gemminess. This particular specimen is filled with sharp, rich emerald green color Dioptase crystals measuring up to 2.0 cm forming a very attractive, 3-dimensional piece. This find seemed to be somewhat limited, and hopefully will produce more of this fine Dioptase.
4.5 x 2.8 x 1.4 cm. Gemmy and lustrous, deep emerald-green dioptase crystals form a fine and aesthetic jackstraw cluster on this specimen from recent finds in Namibia. The largest crystal is 1.2 cm. Highly representative of the species and locality.
7.3 x 6.2 x 6.0 cm. Dioptase on mottramite is rare from the Tsumeb Mine. This fine, old-time specimen features very gemmy, emerald-green dioptase crystals to 3 mm aesthetically scattered on the vuggy, botryoidal mottramite crust covering the matrix. Ex. Mullane Collection.
3.6 x 2.5 x 2.2 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 excellent gemminess. This particular specimen hosts dozens of highly lustrous, gemmy, rich emerald-green Dioptase crystals on gossan matrix creating a very attractive overall specimen. The largest crystal measures 9 mm. This find seemed to be somewhat limited, and hopefully will produce more of this fine Dioptase specimens.
21.1 x 10.0 x 6.2 cm. A striking, large cabinet, combination specimen from the Ray Mine of Arizona. This is a totally layered piece, including the matrix, which is mostly layered quartz with malachite. A thick crust of light green malachite is followed by the striking band of emerald-green, dioptase microcrystals. Sparkly, drusy quartz, tinted by the underlying dioptase, covers most of the vuggy surface. Another thinner sequence of dioptase overlain by malachite covers part of the piece. The final, superb accent are the two, rounded, log-like clusters of sparkly, forest-green and light green, primary malachite crystals. This is an impressive, large combination specimen from this noted locale.
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Rob Lavinsky, rob@irocks.com
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share specimen![Dioptase, Quartz from Kaokoveld Mine, Kaokoveld Plateau, Kunene Region, Namibia [db_pics/mdpics/MD-251481a.jpg]](db_pics/mdpics/MD-251481a.jpg)
![Dioptase, Plancheite, Chrysocolla, Quartz (Var: Smoky Quartz) from Kaokoveld Mine, Kaokoveld Plateau, Kunene Region, Namibia [db_pics/mdpics/MD-251520a.jpg]](db_pics/mdpics/MD-251520a.jpg)
![Dioptase, Plancheite, Chrysocolla, Quartz (Var: Smoky Quartz) from Kaokoveld Mine, Kaokoveld Plateau, Kunene Region, Namibia [db_pics/mdpics/MD-251520b.jpg]](db_pics/mdpics/MD-251520b.jpg)
![Dioptase, Calcite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-252594a.jpg]](db_pics/mdpics/MD-252594a.jpg)
![Dioptase, Calcite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-252594b.jpg]](db_pics/mdpics/MD-252594b.jpg)
![Dioptase from Altyn-Tyube (Altyn-Tube) deposit, Kirghiz Steppes (Asiatic Steppes), Qaraghandy Oblysy (Karaganda Oblast'), Kazakhstan [db_pics/mdpics/MD-252612a.jpg]](db_pics/mdpics/MD-252612a.jpg)
![Plancheite, Chrysocolla, Calcite, Dioptase from Tantara Mine, Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) [db_pics/mdpics/MD-254261a.jpg]](db_pics/mdpics/MD-254261a.jpg)
![Plancheite, Chrysocolla, Calcite, Dioptase from Tantara Mine, Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) [db_pics/mdpics/MD-254261b.jpg]](db_pics/mdpics/MD-254261b.jpg)
![Plancheite, Chrysocolla, Calcite, Dioptase from Tantara Mine, Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) [db_pics/mdpics/MD-254261c.jpg]](db_pics/mdpics/MD-254261c.jpg)
![Dioptase from Tantara Mine, Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) [db_pics/mdpics/MD-254264a.jpg]](db_pics/mdpics/MD-254264a.jpg)
![Dioptase from Tantara Mine, Shinkolobwe, Central area, Katanga Copper Crescent, Katanga (Shaba), Democratic Republic of Congo (Zaïre) [db_pics/mdpics/MD-254264b.jpg]](db_pics/mdpics/MD-254264b.jpg)
![Dioptase from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-254998a.jpg]](db_pics/mdpics/MD-254998a.jpg)
![Dioptase from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-255140a.jpg]](db_pics/mdpics/MD-255140a.jpg)
![Dioptase from Kimbedi, Pool Region, Republic of Congo (Brazzaville) [db_pics/mdpics/MD-255196a.jpg]](db_pics/mdpics/MD-255196a.jpg)
![Dioptase, Smithsonite, Calcite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-256823a.jpg]](db_pics/mdpics/MD-256823a.jpg)
![Dioptase from Kimbedi, Pool Region, Republic of Congo (Brazzaville) [db_pics/mdpics/MD-258756a.jpg]](db_pics/mdpics/MD-258756a.jpg)
![Dioptase from Kimbedi, Pool Region, Republic of Congo (Brazzaville) [db_pics/mdpics/MD-258756b.jpg]](db_pics/mdpics/MD-258756b.jpg)
![Dioptase from Kaokoveld Mine, Kaokoveld Plateau, Kunene Region, Namibia [db_pics/mdpics/MD-260075a.jpg]](db_pics/mdpics/MD-260075a.jpg)
![Dioptase, Mottramite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-261480a.jpg]](db_pics/mdpics/MD-261480a.jpg)
![Dioptase, Mottramite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-261480b.jpg]](db_pics/mdpics/MD-261480b.jpg)
![Dioptase from Kimbedi, Pool Region, Republic of Congo (Brazzaville) [db_pics/mdpics/MD-261623a.jpg]](db_pics/mdpics/MD-261623a.jpg)
![Dioptase from Kimbedi, Pool Region, Republic of Congo (Brazzaville) [db_pics/mdpics/MD-261623b.jpg]](db_pics/mdpics/MD-261623b.jpg)
![Quartz, Dioptase, Malachite from Ray Mine, Scott Mountain area, Mineral Creek District (Ray District), Dripping Spring Mts, Pinal Co., Arizona, USA [db_pics/mdpics/MD-261693a.jpg]](db_pics/mdpics/MD-261693a.jpg)
![Quartz, Dioptase, Malachite from Ray Mine, Scott Mountain area, Mineral Creek District (Ray District), Dripping Spring Mts, Pinal Co., Arizona, USA [db_pics/mdpics/MD-261693b.jpg]](db_pics/mdpics/MD-261693b.jpg)