Brilliant, gem-like, well-defined aquamarine-blue celestine crystals are disposed in aesthetic contrast on a matrix covered with snowy white colemanite crystals. A piece of exceptional aesthetics from a locality known for its borates, but from which few specimens of this type have been seen.

Brilliant, gem-like, well-defined aquamarine-blue celestine crystals are disposed in aesthetic contrast on a matrix covered with snowy white colemanite crystals. A piece of exceptional aesthetics from a locality known for its borates, but from which few specimens of this type have been seen.

In this specimen, we can see numerous tabular ferberite crystals with a very unusual orientated parallel growth. Very lustrous and intensely black in color, they are arranged on a matrix of clear quartz crystals. This specimen comes from the Nicolau collection (Barcelona) and was acquired from Dr. Joan Viñals.

85 €

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Lovely orange groups of highly lustrous heulandite crystals. Crystals form together beautifully to create these highly aesthetic clusters of unusually orange crystals. Lustre is fantastic for the species.

60 €

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Group of andradite crystals, which show us very well defined faces of the dodecahedron truncated at the edges by those of the trapezohedron. It has an intense brown color and a more marked shine on the trapezohedron faces. Specimen from this classic Russian town that is rare today.

220 €

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A very brilliant group of epidote crystals with an intense and deep green color. It shows a very rare habit for the species. We can observe psedo-octahedrical forms in one side and a flattened shape generated by a extremely developed frontal pinacoid. To increase its scientific interest we must say that it is magnetic due to magnetite inclusions.

120 €

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Velvety layer of cyanotricite covering the qcalcite matrix with small fluorite cubic crystals. The colour is very attractive. It comes from J. Viñals and the E. Nicolau collection (Barcelona). Very aesthetic specimen.

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In this specimen we could observe numerous aggregates of hexagonal gmelinite-Ca crystals, colorless, shiny and with parallel growths. They are accompanied by chabasita-Ca that gives this orange color to the specimen. Very difficult to find specimens of this quality and locality.

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Group of analcime crystals, with exceptional size, defined and faceted, with slightly curved edges. With small matrix of volcanic rock. These pieces are very old and difficult to find today. The piece is accompanied by a Marçal Lloria label, by Lloid.

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Lorenzenite is a rare sodium titanium silicate found in nepheline pegmatites and syenites. In this specimen we can see a good-sized brown crystal, shiny, defined and arranged aerially on the matrix. With aegirine needle inclusions.

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Very complex specimen formed by various species such as stannite, kesterite, arsenopyrite, muscovite... A very interesting combo from this Chinese mine.

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Orange veins of huanghoite-(Ce), very fine grained and associated with other rare earth carbonates such as sinchysite-(Ce) and Röntgenite-(Ce), along with aegirine of greenish tones. A hard to find rarity. Bayan Obo is the world's largest rare earth deposit (REE). Interestingly the fluorite content of the ores also makes it the largest fluorite deposit in the world. You have to think that the Bayan Obo deposit is 18 km long and 3 km wide, covering a total area of 48 km². The deposit is made up of three main open pit deposits.

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Several ilvaite crystals on a druse of quartz crystals, with an intense black color, doubly terminated and twinned. Observing with the magnifying glass we can see perfect doubly terminated crystals, a pleasure. They are arranged in a very aerial way giving the specimen a notable elegance.

In this specimen we can observe two very well defined anatase crystals, with the shapes of the tetragonal dipyramid truncated at the vertices by pinacoidal faces. The shine is excellent and they have an almost black color but with navy blue reflections when the light hits them. They are arranged in a very aerial way on a rock matrix covered by small tabular b alvite crystals between transparent and translucent and very brilliant.

125 €

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Very rich group of mimetite crystals, with an intense orange color, luster and transparency, with interpenetrated hexagonal crystals truncated by the pinacoidal faces.

A lustrous slightly translucent brown scheelite crystal, this with pale green cubic fluorite crystals at its base. Neat comination piece. From a distinctive and limited find in the late 1990's. With Joan Viñals label. Active under SW-UV light.

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A classic specimen with a label from a classic Catalan dealer Sr. Joan Montplet, from "El Filó" in Sant Celoni (Barcelona). A group of green, prismatic crystals of fluorapophyllite-(K), transparence is observed on a matrix of stilbite-Ca crystals. Interesting for its aesthetics and label.

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A particularly fine specimen from this important locality with thick, metallic-foil-like, flat-laying crystals to 35 mm embedded in matrix. Ex. Emili Nicolau Collection.

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Excellent specimen of hydroboracite, with a very good size, formed by numerous radial aggregates of acicular crystals. Very good brilliance, transparence and with color zoning, between colorless to slightly honeyed. This specimen has a former owner's handwritten label. A display museum specimen.

160 €

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Very interesting specimen formed by a matrix of native copper crystals, partially covered by numerous red to almost black cuprite crystals, very defined and brilliant. It is accompanied in the matrix by delafossite (CuFeO2) aggregates, such as needles and radiated globules. Representative for the species. With the handwritten label of J. Viñals.

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Group of twinned prismatic scolecite crystals, very brilliant and transparent. It is accompanied by small hyaline crystals of fluorapophyllite-(K), bright and very defined. Scolecite is a rather rare species of the zeolite group from India. With handwritten label by J. Viñals and belonged to the Nicolau collection (Barcelona).

190 €

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A sharp crystal of lazurite, sitting right up on the marble matrix. A representative miniature for this species. Lazurite is the blue component of the 'gemstone' (or, more usually, decorative rock) Lapis Lazuli, which is a lazurite-calcite-pyrite rock that has been mined as a gem material for some 9,000 years. Before the 2021 redefinition, all lazurites were only sulfide-rich varieties of haüyne and not a separate species.

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Excellent and aesthetic specimen formed by a large group of fluorite crystals, very well defined, with a cubic shape and beveled edges by the dodecahedron forms. Translucent, with purple zoning colour. They are disposed on a white calcite matrix, on which they contrast. A piece for the best display.

Excellent specimen of fluorapophyllite-(K) with very good size crystals that show the shapes of the tetragonal prism with faces of the dipyramid truncated by the basal pinacoid. Very good transparency, brilliance and definition. It is disposed very aerial on a matrix with stilbite. With handwritten label by Joan Viñals.

130 €

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