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SD87AC0: Dolomite with Siderite
Drusy growth, on a rocky matrix, of sharp rhombohedral Siderite crystals with a brown color coated by white rhombohedral Dolomite crystals between transparent and translucent and small Quartz crystals. A French classic.
La Mure coal mines, La Mure, Matheysine-Trièves, Grenoble, Isère, Auvergne-Rhône-Alpes  France
Specimen size: 15.8 × 9.4 × 3.9 cm = 6.22” × 3.70” × 1.54”
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EC86AC4: Dolomite with Siderite and Gypsum with inclusions of Boulangerite
Parallel aggregates of very flattened rhombohedral Siderite-Dolomite crystals partially coated by Gypsum crystals that have Boulangerite inclusions. We note that this association of Boulangerite and Gypsum is rare.
Herja Mine, Chiuzbaia, Baia Sprie, Maramures  Romania (1960-1970)
Specimen size: 11 × 7.2 × 4.3 cm = 4.33” × 2.83” × 1.69”
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18TFR14: Dolomite, Calcite, Quartz
Druse formed of slightly transparent, white Quartz crystals, terminated and with an aerial growth habit on which sit several isolated cream-colored Dolomite crystals with rough faces and sharp edges. Finally, the piece is adorned with whitish scalenohedral Calcite crystals. The Trepča mining complex is one of the largest polymetallic deposits in the world.
Stan Trg (Stan Terg, Stari Trg) Mine, Trepča Complex, Trepča Valley, Kosovska Mitrovica, Kosovska Mitrovica District  Kosovo (2000-2021)
Specimen size: 10.5 × 8.2 × 4.7 cm = 4.13” × 3.23” × 1.85”
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ERT9AQ1: Donnayite-(Y) with Calcite
Divergent prismatic crystals of Donnayite-(Y), one of them clearly dominant, with a green-grey color, lustrous and aerial on the matrix, with Calcite crystals. The piece comes from the type locality for the species and due to its quality and crystal size it can be considered as among the best known.
Poudrette Quarry, Mont Saint-Hilaire, La Vallée-du-Richelieu RCM, Montérégie, Québec  Canada
Specimen size: 4.5 × 3.7 × 3 cm = 1.77” × 1.46” × 1.18”

Main crystal size: 2 × 1 cm = 0.79” × 0.39”
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EA97AN2: Doubly terminatad Anatase with epitaxial Rutile
Floater parallel growth of very acute dipyramidal Anatase crystals completely epitaxially covered by fibrous Rutile crystals, with a reddish yellow color.
Anatase-Rutile occurrence, Cuiabá District, Gouveia, Minas Gerais  Brazil (03/2003)
Specimen size: 3.2 × 1.6 × 1.1 cm = 1.26” × 0.63” × 0.43”
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FK76: Doubly terminated Amblygonite
Doubly terminated (although the left termination it is not sharp) pretty transparent, an excellent representative of the species. Photographed on page 179 of the Spanish mineral book: 'Minas y minerales de Iberoamérica'.
Itinga, Vale do Jequitinhonha, Minas Gerais  Brazil
Specimen size: 4.5 × 1.6 × 0.7 cm = 1.77” × 0.63” × 0.28”
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RJ63I7: Doubly terminated and twinned Quartz
Twinned, doubly terminated crystal. The twin is very visible, an unusual thing for Quartz, because the suture crosses the front face of the prism and the opposite position of the accessory rhombohedron faces.
Wassen, Uri  Switzerland (±1980)
Specimen size: 5 × 2.9 × 2.9 cm = 1.97” × 1.14” × 1.14”
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ED48AF6: Doubly terminated Azurite
A complete, very aerial floater aggregate of sharp, vividly colored, rhombohedral Azurite crystals. The sample is from recent and surprising finds on the old dumps area at Chessy.
Chessy-les-Mines, Les Bois d'Oingt, Villefranche-sur-Saône, Rhône, Auvergne-Rhône-Alpes  France (2015)
Specimen size: 3.6 × 2.4 × 1.6 cm = 1.42” × 0.94” × 0.63”

Main crystal size: 0.7 × 0.7 cm = 0.28” × 0.28”
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TG46G2: Doubly terminated Azurite
Excellent parallel growth of numerous crystals, prismatic and doubly terminated. Another crystal perfectly terminated and in a totally eccentric position, stands on of the group.
Kerrouchen, Khénifra Province, Beni Mellal-Khenifra Region  Morocco (2004)
Specimen size: 5 × 3.2 × 1.3 cm = 1.97” × 1.26” × 0.51”
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NJ89AM5: Doubly terminated Azurite with Malachite and Dolomite
Doubly terminated crystal of Azurite, very sharp and with well defined crystal forms. With coatings of Malachite, on a matrix with coatings of pinkish rhombohedral Dolomite crystals. The specimen, a Moroccan classic, comes from the collection of Ignacio Gaspar Sintes (number AZU-10), whose collection card we will send to the buyer.
Touissit, Touissit District, Jerada Province, Oriental Region  Morocco
Specimen size: 6 × 4.5 × 3 cm = 2.36” × 1.77” × 1.18”
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KH86M8: Doubly terminated Baryte
Parallel growth of tabular crystals from a classic American locality. The crystals, sharp and very well defined, have an excellent luster and a honey color, between orange and yellow.
Sherman Mine, Upper Iowa Gulch, Leadville District, Lake County, Colorado  USA
Specimen size: 7.2 × 5.6 × 1.5 cm = 2.83” × 2.20” × 0.59”
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TL39H3: Doubly terminated Bastnäsite-(Ce)
A jewel for an expert. Floater prismatic, doubly terminated crystal with very well defined flat faces of the pinacoid and the triangular faces of the dypyramid. Crystal is very transparent as the picture shows and has a magnificent tanned honey color.
Zagi Mountain, Hameed Abad Kafoor Dheri, Peshawar, Khyber Pakhtunkhwa  Pakistan (2005)
Specimen size: 2 × 0.7 × 0.6 cm = 0.79” × 0.28” × 0.24”
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6TC27K9: Doubly terminated Beryl (variety aquamarine)
Two doubly terminated crystals in parallel growth, light blue in color. Both retain their terminations, partially perforated by dissolution channels that pass through both crystals as far as their mid-sections.
Medina Municipality, Minas Gerais  Brazil
Specimen size: 8.4 × 1.8 × 1.1 cm = 3.31”
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EE66L7: Doubly terminated Beryl (variety aquamarine)
Doubly terminated Aquamarine crystal showing two different terminations. One of them with very curious rounded dissolution forms and the opposite has pyramid terminations. The prism faces are very rich in growth pits. Excellent transparency, good color and brilliance make this specimen a very interesting one.
Pica Pau deposit, Marambainha, Caraí, Vale do Jequitinhonha, Minas Gerais  Brazil (2007)
Specimen size: 5.1 × 0.7 × 0.6 cm = 2.01” × 0.28” × 0.24”
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MF97L7: Doubly terminated Beryl (variety aquamarine)
Excellent specimen, both its size and the excellent state of preservation. Doubly terminated crystal with very different terminations. One of them is very acute with multiple pyramid faces showing curious dissolution curved forms; the opposite is flat deliniated by small pyramid faces crossed by pinacoid planes. Excellent transparency, good color and brilliance make this specimen a very exceptional one.
Pica Pau deposit, Marambainha, Caraí, Vale do Jequitinhonha, Minas Gerais  Brazil (2007)
Specimen size: 15.3 × 1.3 × 1.1 cm = 6.02” × 0.51” × 0.43”
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MR96N4: Doubly terminated Beryl (variety aquamarine) with Albite
Floater group of doubly terminated crystals of good color, transparency and luster, with growth deformations marked by fibrous zones.
Nyet-Bruk, Nyet, Braldu Valley, Shigar District, Gilgit-Baltistan (Northern Areas)  Pakistan (2008)
Specimen size: 5.5 × 3.8 × 1.2 cm = 2.17” × 1.50” × 0.47”
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TE76H6: Doubly terminated Beryl (variety emerald)
Parallel group of prismatic crystals all them doubly terminated, really big and having good color and transparency, free of damage and esthetically placed on the matrix.
Coscuez mining district, Municipio San Pablo de Borbur, Western Emerald Belt, Boyacá Department  Colombia (07/2002)
Specimen size: 3.1 × 2.8 × 2.3 cm = 1.22” × 1.10” × 0.91”
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TR28AF6: Doubly terminated Beryl (variety emerald)
Doubly terminated floater crystal with very well defined faces and edges and excellent terminations, one of them simple and pinacoidal, the other showing an unusual polycrystalline growth with a deep structural incision that seems to break the crystal longitudinally into two symmetrical parts. The sample is transparent, bright and vividly colored.
Chivor mining district, Municipio Chivor, Eastern Emerald Belt, Boyacá Department  Colombia
Specimen size: 3.3 × 0.8 × 0.7 cm = 1.30” × 0.31” × 0.28”
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TJ59H7: Doubly terminated Beryl (variety emerald) on Calcite
Prismatic doubly terminated crystal of very well defined faces and edges and excellent color and transparency that contrast with a white matrix of crystallized Calcite. We emphasize the perfect terminations both for the good definition of the flat faces and the intensity of the color. A beautiful miniature.
Muzo mining district, Western Emerald Belt, Boyacá Department  Colombia (2005)
Specimen size: 3.9 × 2.7 × 2.6 cm = 1.54” × 1.06” × 1.02”
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EQ66K1: Doubly terminated Bournonite
Group of prismatic crystals. with an excellent luster and the special feature that practically all them are doubly terminated.
Yaogangxian Mine, Yizhang, Chenzhou Prefecture, Hunan Province  China (2004)
Specimen size: 3.5 × 3 × 1.6 cm = 1.38” × 1.18” × 0.63”

Main crystal size: 3.5 × 1.2 cm = 1.38” × 0.47”
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DR91AC7: Doubly terminated Calcite
Aggregate of Calcite crystals, some of them doubly terminated and one that is clearly dominant. They consist of a hexagonal prism and very flat terminal rhombohedra. They are colorless, clear, and very bright.
Dalnegorsk, Dalnegorsk Urban District, Primorsky Krai  Russia
Specimen size: 8.6 × 6 × 5.8 cm = 3.39” × 2.36” × 2.28”
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M82N: Doubly terminated Calcite
Doubly terminated Calcite. Sharp edges and pretty gemmy. A perfect representative sample from Berry Materials quarry.
Berry Materials Corp. Quarry, North Vernon, Jennings County, Indiana  USA
Specimen size: 4.2 × 6.5 cm = 1.65” × 2.56”
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RZ11H9: Doubly terminated Calcite
The sample mined the August 1960, must be one of the first known from the locality. Doubly terminated, a twin of two trapezohedrons with rhombohedrons forming the terminations.
La Florida mining area, Herrería-Valdáliga-Rionansa, Comarca Costa Occidental/Saja-Nansa, Cantabria  Spain (06/1960)
Specimen size: 5 × 3.7 × 2.8 cm = 1.97” × 1.46” × 1.10”
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NE16V5: Doubly terminated Calcite
Floater doubly terminated crystal, transparent, with yellow color and rich in faces. The predominating forms are the scalenohedron with and a shallow rhombohedron on the terminations. Some Dolomite is attached to the back side.
La Florida mining area, Herrería-Valdáliga-Rionansa, Comarca Costa Occidental/Saja-Nansa, Cantabria  Spain
Specimen size: 7 × 4.4 × 3.7 cm = 2.76” × 1.73” × 1.46”
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TM89AJ8: Doubly terminated Calcite with Dolomite, Sphalerite and Pyrite
Great doubly terminated scalenohedral Calcite crystal with very well defined polycrystalline growths. It is translucent, very bright, with an intense yellow color, and on matrix with Sphalerite and Pyrite.
Sweetwater Mine, Ellington, Viburnum Trend District, Reynolds County, Missouri  USA
Specimen size: 15.4 × 7.8 × 5.4 cm = 6.06” × 3.07” × 2.13”

12722 results found. 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