Rosell Minerales

A rich group of fluorite crystals, greenish to bluish tone, transparent and brilliant. They show the cube faces modified by the trapezohedron. With small pyrite crystals. Very aesthetically disposed on a brilliant and defined hyaline quartz crystal.

Size: 5.8 x 3.0 x 3.0 cm.
Main crystal: 12 x 12 mm.
Found in 03/2015.

Fluorescent under long wave UV

A very aesthetic fluorite crystal, greenish to bluish tone with zoning, transparent and brilliant. It shows cube faces modified by the trapezohedron. With small pyrite crystals. Very aerial disposed on a brilliant and defined hyaline quartz crystal.

Size: 8.7 x 4.8 x 3.2 cm.
Main crystal: 10 x 10 mm.
Found in 03/2015.

Fluorescent under long wave UV

Very aesthetic divergent group of hübnerite crystals showing a marked prismatic habit, with good brightness, intense color, with very very visible reddish transparencies. They are disposed on a hyaline quartz matrix. A selected specimen.

Size: 9.5 x 6.5 x 2.7 cm.
Main crystal: 19 x 3 mm.
Found in 2016.

Only a handful of localities those offer us this quality coquimbite crystals. In this specimen we can enjoy a hexagonal shape crystal of this rare iron and aluminium sulfate showing an intense violet color under fluorescent light or LED type. It is accompanied by numerous yellow metavoltine crystals, along with fibrous halotrichite. Note that under the magnifying glass we can navigate in a world of brilliant crystals, some of which of krausite species (yellowish to grey transparent). We left this identification pleasure to the collector. Regarding its environmental stability, this sample has been stored during more than five years without further alteration.

Size: 5.8 x 4.7 x 2.5 cm.
Main crystal: 13 x 12 mm.
Found in 03/2010.

This specimen shows a very well developed Coquimbite crystals, with an intense violet color. Matrix is formed by white fibrous halotrichite with some orange to yellow Mg-copiapite. Embeded in the halotrichite matrix some small doubly terminated krausite crystals. A complete specimen...

Size: 4.5 x 3.5 x 3.3 cm.
Main crystal: 25 x 25 mm.
Found in 03/2013.

In this specimen we can enjoy brilliant aggregates of brown transparent römerite crystals, a very rare iron sulphate. They are accompanied by coquimbite showing an intense violet color under fluorescent light or LED type. They're accompanied by numerous yellow metavoltine/copiapite crystals, along with minor fibrous halotrichite. Note that under the magnifying glass we can navigate in a world of brilliant crystals, some of which of krausite species (yellowish to grey transparent). We left this identification pleasure to the collector. Regarding its environmental stability, this sample has been stored during more than six years without further alteration.

Size: 8.8 x 6.5 x 4.0 cm.
Found in 03/2010.

Specimens of azurite from the Peruvian mines are very rare and less with the quality of this we propose. There are various cavities in a matrix of goethite, which are covered by malachite botrioids, formed by very thin green needles. Over them several azurite rosette aggregates, isolated crystals also present, with an exceptional brightness and color. The specimen is really aesthetic and from a locality not seen in collections.

Size: 8.4 x 5.0 x 3.2 cm.
Found in 2016

These specimens of Peruvian arsenopyrite stand out for their excellent luster and perfection of its crystals. With the camera I am not able to capture its real beauty. On a sulfide matrix we can enjoy hundreds of arsenopyrite crystals, prismatic, with defined terminal faces, rather than well-defined. They're accompanied by chalcopyrite crystals with dull luster, but gold tone, also well-defined and twinned. Brilliance and quality. A novelty of Sainte-Marie-aux-Mines 2016.

Size: 7.8 x 5.0 x 3.5 cm.
Main crystal: 5 x 2 mm.
Found in 2016.

These specimens of Peruvian arsenopyrite stand out for their excellent luster and perfection of its crystals. With the camera I am not able to capture its real beauty. On a sulfide matrix we can enjoy several arsenopyrite crystals, prismatic, with defined terminal faces, rather than well-defined. They're accompanied by chalcopyrite crystals with dull luster, but gold tone, also well-defined and twinned. Brilliance and quality. A novelty of Sainte-Marie-aux-Mines 2016.

Size: 4.7 x 3.0 x 2.7 cm.
Main crystal: 5 x 1 mm.
Found in 2016.

These specimens of Peruvian arsenopyrite stand out for their excellent luster and perfection of its crystals. With the camera I am not able to capture its real beauty. On a sulfide matrix we can enjoy hundreds of arsenopyrite crystals, prismatic, with defined terminal faces, rather than well-defined. They're accompanied by chalcopyrite crystals with dull luster, but gold tone, also well-defined and twinned. Brilliance and quality. A novelty of Sainte-Marie-aux-Mines 2016.
In this sample we see aggregates of intense black color and metallic luster which analysis indicates that it is ferberite (with minor % Mn). Simply outstanding.

Size: 6.5 x 6.3 x 4.0 cm.
Main crystal: 5 x 2 mm.
Found in 2016.

Aesthetic specimen of chalcopyrite, very brilliant, with defined but complex crystals, on which a well developed rhombohedral siderite have grown, interpenetrating and showing rough faces. They show a uniform honey color. These specimens on matrix are rarely seen in the market and stand out for their beauty and mineralogical interest.

Size: 8.4 x 6.8 x 4.0 cm.
Main crystal: 18 x 14 mm.

Aesthetic specimen of chalcopyrite, very brilliant, with defined but complex crystals, on which a well developed rhombohedral siderite have grown, interpenetrating and showing rough faces. They show a uniform honey color. These specimens on matrix are rarely seen in the market and stand out for their beauty and mineralogical interest.

Size: 8.5 x 6.8 x 3.0 cm.
Main crystal: 18 x 16 mm.

Very interesting galena crystal, remarkable for its crystallography. It presents the cube and octahedron faces with a very balanced proportion. Brilliant, well disposed on a matrix with quartz crystals with an elongated prism an some brilliant pyritohedrons. A Peruvian aesthetic especimen.

Size: 7.0 x 4.6 x 3.5 cm.
Main crystal: 18 x 16 mm.

This specimen shows several mineral species. The matrix which "supports" all of them is a group of huge size galena crystals with sharp cube-octahedral faces. Partially covering them we can see large groups of flattened realgar crystals. As alteration of these realgar crystals, due to the light, we have a patina, between yellow to orange, pararealgar. Between these galena crystals some orpiment aggregates, with a very intense yellow color.
We would like to emphisize in this specimen the presence of numerous seligmanite (PbCuAsS3) prismatic crystals, with a luster that makes them stand out. Evidently magnification is necessary to enjoy all their forms. Accompanied by chalcopyrite, pyrite and quartz. As you can see, it is a complete and representative specimen from this Peruvian mine.

Size: 7,5 x 6,0 x 5,5 cm.

These specimens of fluorite are very unusual in the market. Groups of octahedral fluorite crystals truncated by cube faces, defined, bright and transparent to translucent. There is an aesthetic color zoning, between colorless to slightly greenish with predominant violet tones on the cube faces, a real curiosity. It is accompanied, to add interest if possible, by globular foliaceous aggregates of bright pink cookeite, a member of the chlorite group. Both minerals are very fluorescent under UV-LW light.

Size: 6.3 x 5.4 x 4.8 cm.
Main crystal: 32 x 30 mm.
Found in 2016.

Fluorescent under long wave UV

These specimens of fluorite are very unusual in the market. Groups of cubic fluorite crystals truncated by octahedron faces, defined, bright and transparent to translucent. There is an aesthetic color zoning, between colorless to slightly greenish with predominant violet tones on the cube faces, a real curiosity. It is accompanied, to add interest if possible, by globular foliaceous aggregates of bright pink cookeite, a member of the chlorite group. Both minerals are very fluorescent under UV-LW light. A good sized display specimen.

Size: 10.7 x 11.0 x 3.8 cm.
Main crystal: 12 x 12 mm.
Found in 2016.

Fluorescent under long wave UV

A really curious specimen that shows a matrix with well developed crystals of pyrite, partially covered by galena, very bright and with extremely rounded forms, remarkable shape! It is also accompanied by complex crystals of sphalerite. A very aesthetic, unusual and interesting sample.

Size: 6.2 x 6.0 x 4.4 cm.

A aesthetic good size cluster specimen of pyrite crystals really brilliant, defined faces and edges and with a spectacular luminosity. With some quartz. The picture can not collect all the brightness of the specimen. From a recent find (2016) in this classic Peruvian mine.

Size: 6.8 x 6.3 x 5.8 cm.
Main crystal: 20 x 20 mm.
Found in 2016

A floating specimen, all brilliance. It is a rich group of crystals with dominant cube and dodecahedron faces. One of them stands out for its size and the large number of cube, dodecahedron, octahedron, pyritohedron faces. As we said, nice luster and characteristic golden color. It presents small damage without affecting the quality of the sample. An excellent specimen from this Peruvian mine.

Size: 6.7 x 5.5 x 3.8 cm.
Main crystal: 2.8 x 2.8 cm.
Found in 2016.

A very aesthetic group of deep green crystals of epidote. Fan-shaped thick prismatic crystals with well defined terminal faces. Just a very few of the terminations are incomplete. Good brilliance and very aerial.

Size: 5.1 x 4.0 x 2.7 cm.
Found in 05/2015.

A very aesthetic group of deep green crystals of epidote. Fan-shaped thick prismatic crystals with well defined terminal faces. Just a very few of the terminations are incomplete. Good brilliance and very aerial.

Size: 5.2 x 2.9 x 2.6 cm.
Found in 05/2015.

A very aesthetic group of deep green crystals of epidote. Fan-shaped thick prismatic crystals with well defined terminal faces. Just a very few of the terminations are incomplete. Good brilliance and very aerial. Accompanied by a defined quartz crystal.

Size: 4.5 x 3.8 x 2.3 cm.
Found in 05/2015.

This specimen is very rich in lanceolate clinozoisite greenish crystals, bright and sharp. They are accompanied by groups of quartz with well-developed prism according to the main axis. A Peruvian locality not well represented in collections.

Size: 7,5 x 5,0 x 4,3 cm.
Main crystal: 5 x 1 mm.
Found in 05-2011.

A rich group of lenticular gypsum crystals forming rosettes. Some of them are well developed but with another shape, lanceolated and showing swallowtail twin. These are very transparent, defined faces and edges and very aerial disposed on the matrix. Accompanied by some cubic halite transparent and colorless crystals. An uncommon and aesthetic combination.

Size: 9,4 x 6,5 x 6,5 cm.
Main crystal: 28 x 13 mm.

Fluorescent and phosphorescent under long wave UV

A rich group of lenticular gypsum crystals forming rosettes. Some of them are well developed but with another shape, lanceolated and showing swallowtail twin. These are very transparent, defined faces and edges and very aerial disposed on the matrix. Accompanied by some cubic halite transparent and colorless crystals.
Gypsum fluorescence under ultraviolet source is excellent, but the phosphorescence is the most intense and lengthy I've never seen before. An uncommon and aesthetic combination.

Size: 9,5 x 7,7 x 4,8 cm.
Main crystal: 37 x 18 mm. (Gypsum)

Fluorescent and phosphorescent under long wave UV