A floater nodule with blackish and whitish spheroidal forms with some visible crystalline faces. They're a silicified fossil sponge which have preserved the original morphology of the biological specimens. 4j6a3d

A floater nodule with blackish and whitish spheroidal forms with some visible crystalline faces. They're a silicified fossil sponge which have preserved the original morphology of the biological specimens.

Rich group of cubic fluorite crystals, very sharp, transparent and with a greenish to yellow tone very characteristic of these fluorites. This specimen is from the mines of Sant Marçal (also called of the Matagalls Mt.), located in the massif of El Montseny. Nowadays not many samples are seen with this quality. A classic of the Catalan Mineralogy.

These hematite specimens belong from ancient finds (ca 1980s) in a mine located on the property of the Piquín farmhouse. In this huge size sample we can see an aesthetic botryoidal aggregates, with an exceptional luster. Even botryoidal "negative" cavities are observed, inward. In the fracture zones of the specimen, radial fibrous aggregates forming botrioids are revealed. A piece of quality without equal and very difficult to find nowadays.

Pyroaurite-2H is a polytype formerly known as sjögrenite (discredited). This specimen belongs from a classic Italian locality for the species. A matrix of marble with calcite on which stand out numerous foliaceous aggregates of tabular orange color pyroaurite. This specimen has its pedigree in the collections Pierini and Vochten. The label of the latter accompanies this interesting piece.

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Senegalite is a rare aluminium phosphate. In this specimen we can observe several prismàtic transparent crystals on blue turquoise. This specimen is from the type locality for the species.

Superb and brilliant specimen formed by botryoidal aggregates of malachite, of intense green color, and covered by small hyaline quartz crystals. Quartz gives it this aesthetic brilliance. Matrix is formed by a stockwork of altered chalcopyrite. Malachite specimens from this locality and with this shape are unusual.

Druse of trapezohedral crystals of andradite from this classic Spanish locality. Intense brilliance, with colors between brown to reddish. On a granatite with epidote. This is a specimen with pedigree from the Gustav Beck collection.

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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.

A huge size rhodochrosite crystal with an intense red color and well defined scalenohedral forms. Good color and transparence. On a solid rocky matrix with hyaline quartz and cubic fluorite crystals (fluorescent). A good specimen hard to find...

Two generations of vanadinite crystals. A good-sized brilliant crystals, with echeloned growths and defined faces and edges. With good color yellow and peppered by deep black coronadite globular aggregates and covering the matrix. Another generation shows small crystals (<1 mm) but with a nice luster, transparence, and yellowish tone. Both are on goethite with mottramite crystals.

A very curious piece composed by a group of quartz crystals, one of them of greater size, with a slight smoky tone and an exceptional transparence. Black almost metallic inclusions of hematite are observed in the top faces of the crystal. Also on them. With a minor feldspar matrix. A very aesthetic specimen.

Large group of sphalerite crystals with an exceptional brilliance, honey color and transparency that allows light to play with the honey colors. Peppered on back side by small crystals of baryte showing flattened shapes. A little gemmy miniature. Troya mine was closed in 1993, only a few years before these specimens were collected in 1990. Nowadays the mine is collapsed and flooded.

Aesthetic crystals of bournonite, twinned, with echeloned growths, very bright and sharp. They are disposed on a matrix with lenticular siderite crystals. It is hard to find samples of this classic German locality. If on hand they are all brilliance, under loupe crystals are amazing.

Rich group of cubic crystals of fluorite, of intense color between violet and purple. They are disposed on a matrix of baryte, with tabular crystals in book shape, dull luster and zoned. Good size for display...

On a white matrix formed by several white dolomite crystals, sharp and with curved faces and edges, we can enjoy a crystal of sphalerite very brilliant, with transparence and a very uniform toasted honey color. Very aesthetic specimen. From a former German Col. Nr.812.

In this good size specimen we can observe a group of tabular wulfenite crystals showing well defined faces and parallel growths. They are interpenetrated between them and accompanied by small but perfect tabular wulfenite crystals on matrix. The brilliance is excellent and in thin parts they show transparence. They are very aerial disposed on a matrix of baryte crystals, with cerussite and dolomite.

This specimen of baryte is one of the most aesthetic I've had to be sold... Added to its quality, the crystallographic "games" are more than interesting. It shows two barite crystals connected by a twin and sharing faces of different orders orthorhombic prisms. Very sharp faces and edges. With transparent to translucent zones and an exceptional brilliance. It preserve some of the original matrix. No damage. An exceptional specimen.

Group of fluorite crystals showing cubic faces with edges beveled by tetrahexahedron. Brilliance, transparence and with a slight bluish tint. A very aesthetic miniature from this classic fluorite Spanish locality.

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Group of fluorite crystals showing cubic faces with edges beveled by tetrahexahedron. Brilliance, transparence and with a slight bluish tint. A very aesthetic miniature from this classic fluorite Spanish locality.

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Among the Spanish collectors, the Zamoran opals are well known. This specimen were collected from an area from which to obtain pieces with this quality and size is very difficult, I can certify it... This specimen presents opal nodules, with an intense orange color, some brilliance and surrounded by a solid matrix. I say this because, despite the visible fractures, stability is assured. A sample of quality for this locality.

Among the Spanish collectors, the Zamoran opals are well known. This specimen were collected from an area from which to obtain pieces with this quality and size is very difficult, I can certify it... This specimen presents opal nodules, with an intense orange color, some brilliance and surrounded by a solid matrix. I say this because, despite the visible fractures, stability is assured. A sample of quality for this locality.

Rich group of hexagonal prismatic mimetite crystals, some of them doubly terminated, with an intense brilliance and intense orange color. Samples from this area and with this quality are not usually seen.

Exceptional specimen formed by several groups of prismatic crystals of adamite, which are disposed forming rosettes on a matrix of goethite. Crystals have a very uniform yellow color, with transparence, and very defined faces and edges. Pure aesthetic.

An aesthetic display specimen. A huge size sample, with large and defined cubic fluorite crystals, with transparence, color between violet and purple. Some of them are partially covered with very small quartz crystals. Different than usual. From old mine times...