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Mineral Specimens with Dioptase
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4 x 4 x 2 cm. A colorful specimen with deep green dioptase inclusions twinkling inside clear calcite rhombohedra. The inclusions are, unusually, oriented along several planes of the crystal such that they leave a colorless rim of clear calcite around the included areas, except the center of some upper crystal faces where the inclusions do surface. Ex. Willy Israel Collection.
5 x 3.5 x 2.5 cm. A colorful specimen with deep green dioptase inclusions twinkling inside clear calcite rhombohedra. This specimen is more richly included than the others above, so much so that it looks like a carpet of sparkling dioptase spreading out from the calcites, rather than included in them! A few tiny yellow spots may be micro-wulfenite crystals in association or included at the edge of one of the calcites. Ex. Willy Israel Collection.
7.9 x 4.5 x 3.7 cm. Large (up to .8 cm) lustrous dioptase crystals with good clarity generously spread out over a coating of clear glassy calcite crystals. Ex. Willy Israel Collection.
3.0 x 2.1 x 1.4 cm. Gemmy and lustrous, emerald-green dioptase crystals to 1.2 cm on contrasting calcite matrix.
4.4 x 2.4 x 2.2 cm. A crystal of 1.5 cm, along with smaller crystals (some of them not complete), in nicely contrasting matrix.
2.0 x 1.0 x 0.8 cm. A fine, gem, doubly-terminated, emerald-green dioptase crystal from the Kaokoveld Mine of Namibia.
8.3 x 5.2 x 4.8 cm. This specimen hosts hundreds of highly lustrous, gemmy, rich emerald green color Dioptase crystals filling a vug of gossan matrix creating a very attractive overall specimen.
4.6 x 4.5 x 4.0 cm. An apparently unique dioptase specimen from a very uncommon Mexican locality - km 1865 on the Guadalajara-Nogales Highway. Gemmy, emerald-green dioptase crystals richly cover both sides of the showy and different-looking rhyolitic gossan matrix. One side has many, small vugs filled with dioptase crystals. The other side is a large, quartz-lined vug richly sprinkled with isolated dioptase microcrystals. Ex. Fred Pough and George Elling Collections.
5.0 x 3.3 x 2.5 cm. Atop a spike of matrix, sitting on a field of stark white calcite, are a half-dozen large crystals of dioptase. These crystals have excellent color and luster. The largest crystal here measures 1.2 cm tip-to-tip.
3.9 x 2.5 x 2.1 cm. Beautifully gemmy, emerald-green dioptase needles are concentrated near the crest of the wedge-like, mounded matrix. Wulfenites cover the entire piece and are coated with hydrozincite. Ex. John Ydren Collection.
5 x 3.2 x 1.3 cm. A fine plate of Dioptase crystals representative of this classic locality. The crystals have superb luster and a rich deep green color. The gemmy portions sparkle with a vivid electric green sparkle. The longest crystal is 2 cm, with the average around 1 cm. Ex. Charlie Key.
1.7 x 1.3 x .6 cm. A delicate cluster of beautiful deep green Dioptase crystals, the longest of which is 1.1 cm. The luster is excellent, as is the gemminess. Ex. Charlie Key.
10.2 x 6.2 x 6.2 cm. A large specimen of Dioptase clusters intergrown with massive-to-radial Malachite. The Dioptase crystals range up to 1 cm. They are lustrous, gemmy, sharp, and a beautiful deep-green. Ex. Charlie Key.
6.0 x 4.9 x 4.2 cm. Gemmy and lustrous, emerald-green dioptase microcrystals are richly peppered on the 3-dimensional cluster of stout, translucent and lustrous, white calcite rhombs. Ex. Rob Smith Collection.
2.2 x 2.2 x 2.0 cm. The large crystal, measuring 2.0 cm in length, is doubly terminated, lustrous and translucent, with a deep emerald green color. Classic old material in the 1950s-1970s. Ex. Carnegie Museum Collection.
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Rob Lavinsky, rob@irocks.com
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share specimen![Dioptase, Calcite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-174200a.jpg]](db_pics/mdpics/MD-174200a.jpg)
![Dioptase, Calcite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-174201a.jpg]](db_pics/mdpics/MD-174201a.jpg)
![Dioptase, Calcite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-174201b.jpg]](db_pics/mdpics/MD-174201b.jpg)
![Dioptase, Calcite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-174229a.jpg]](db_pics/mdpics/MD-174229a.jpg)
![Dioptase, Calcite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-174571a.jpg]](db_pics/mdpics/MD-174571a.jpg)
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![Dioptase from Kimbedi, Pool Region, Republic of Congo (Brazzaville) [db_pics/mdpics/MD-178948b.jpg]](db_pics/mdpics/MD-178948b.jpg)
![Dioptase from Km 1865, Guadalajara-Nogales Highway, Mexico [db_pics/mdpics/MD-179426a.jpg]](db_pics/mdpics/MD-179426a.jpg)
![Dioptase from Km 1865, Guadalajara-Nogales Highway, Mexico [db_pics/mdpics/MD-179426b.jpg]](db_pics/mdpics/MD-179426b.jpg)
![Dioptase, Calcite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-179460a.jpg]](db_pics/mdpics/MD-179460a.jpg)
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![Dioptase from Omaue Mine, Kaokoveld Plateau, Kunene Region, Namibia [db_pics/mdpics/MD-180809a.jpg]](db_pics/mdpics/MD-180809a.jpg)
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![Dioptase, Calcite from Tsumeb Mine (Tsumcorp Mine), Tsumeb, Otjikoto (Oshikoto) Region, Namibia [db_pics/mdpics/MD-181692a.jpg]](db_pics/mdpics/MD-181692a.jpg)
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