Good sized prismatic crystal of corundum, ruby variety. Formed by an elongated prism, staggered and truncated by the shapes of the pinacoid. With small muscovite.

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Corundum crystal of the ruby variety formed by an elongated prism and truncated by the forms of the pinacoid. Good color and size. From this classical Indian locality मैसूर, कर्नाटक, भारत.

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The specimens of this species have been known since ancient times as pseudomorphic kyanite after andalusite. Both species are polymorphic, so substitution is not a rare case. The label says "Santiago de Compostela", but from what we have investigated, it is the area of the Conceilhos de Touro and O Pino, to the E. of Santiago, where for decades this material was worked as kyanite. A piece with history ...

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Good-sized azurite crystal from this classic Moroccan mine. It shows very defined and bright faces and edges, with an intense blue color. It presents a small nick in the upper part but almost invisible. Good specimen indeed.

A very aesthetic miniature, but with an exceptional color variation. Between red, blue, green and yellow. A delicatessen from Brazil, referenced in Joan Astor's published work in issuu, that we recommend you visit and browse.

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Prismatic elbaite crystal, of an intense color, with the defined pinacoidal face truncating the prism. The label indicates that it comes from South Africa, but we are not aware that specimens like this have been found in this part of the world. A miniature gemmy piece.

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A very interesting specimen of topaz, in which we can see striated faces on the prism, truncated by pinacoids, very unusual. Transparence, brilliance and with the handwritten label from the Astor collection indicating "negative" faces. This piece was adquired to the well-know Catalan dealer Jordi Figueras, one of the suppliers of the Folch collection.

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Group of beryl var. heliodor crystals, very brilliant, with an excellent transparence and a very uniform yellow color, real color. Many facets visible. A gem from this very famous and historic location.

A rubellite gemmy specimen, of intense color, with defined faces, transparent to translucent. A variety of red tourmaline, rich in Li and with minor Fe and Mg. It belongs from this classic Mozambican locality, an outcrop of granitic pegmatite where many exotic minerals have been identified in fluid microscopic inclusions.

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Rich group of azurite crystals, with well-defined crystallographic forms, some of them doubly terminated. Intense and characteristic blue color and very brilliant. They are disposed on a matrix accompanied by well defined cerussite crystals, between translucent to transparent, with duftite. From this classic African mines.

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Specimen of beryl aquamarine variety, with good thickness and size. Very transparent, delicate bluish color, with developed prism faces and with terminal faces of the dipyramid truncated by the pinacoid. A gemmy piece.

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Nigerian topaz specimens are not easy to see. This specimen shows a sharp crystal, transparent, with a delicate bluish tone. With well-defined prismatic faces and dipyramidal and prism terminal faces, curious for their development, which look like a twin. A true gem of this mining area in which there are many dispersed deposits.

Group of elbaite crystals, in parallel growth, with striated prismatic faces, deep green color and good luster. From the former Manchion collection, with the characteristic label.

70 €

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Very aesthetic aggregate of strontianite showing ciclic twinned crystals. Very brilliant, translucent and with a defined faces and edges. Accompanied by dolomite. This deposit, worked by opencut mines, in the past was also worked for talc. These specimens are a classic of the Austrian and European mineralogy.

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Very aesthetic aggregate of strontianite showing ciclic twinned crystals. Translucent and with a defined faces and edges. Accompanied by dolomite. This deposit, worked by opencut mines, in the past was also worked for talc. These specimens are a classic of the Austrian and European mineralogy.

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Very aesthetic aggregate of strontianite showing ciclic twinned crystals. Very brilliant, translucent and with a defined faces and edges. Accompanied by dolomite. This deposit, worked by opencut mines, in the past was also worked for talc. These specimens are a classic of the Austrian and European mineralogy.

Kunzite crystal, with striated faces, with good color and transparence. A gemmy specimen.

Excellent specimen of a quartz crystal with inclusions. In this specimen we can see green and reddish inclusions, most likely due to growths of chlorite and iron oxides in the growing crystal. A very interesting and aesthetic piece. From the Joan Astor collection.

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Excellent specimen of a quartz crystal with geometric inclusions. In this specimen we can see green and reddish zonations, most likely due to growths of chlorite and iron oxides on the facets of the growing crystal. A very interesting and aesthetic piece. From the Joan Astor collection.

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Group of fluorite crystals from this classic English mine, presents the shapes of the cube, interpenetrated and some twinned. Good transparence and very characteristic green color. This sample is photographed in some books that Joan Astor published in issuu [online pág. 34]. It was acquired in 1980 from Bailey Minerals (Ángel Jesús Talabán García, Segovia 1942-Madrid 2007). A very aesthetic piece.

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Group of prismatic fluorapatite crystals, with faces of the prism and the hexagonal dipyramids. The transparence and brilliance areexcellent and the yellow color is very intense. This specimen was photographed in some books that Joan Astor published in issuu [online page 86]. It is accompanied in the matrix with hyaline opal aggregates. It was acquired in 1980 from Bailey Minerals (Ángel Jesús Talabán García, Segovia 1942-Madrid 2007). A very aesthetic and good size piece.

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Showy specimen in the form of divergent stalactitic aggregates, with a patina of manganese oxides on the back side. Aerial and good sized. A very curious piece of this mine from Murcia.

Lorenzenite is a rare sodium titanium silicate found in pegmatites and nepheline syenites. A lustrous, sharp, chocolate-brown crystals in matrix on this excellent specimen from the Joan Astor Collection.

Excellent specimen of rhodochrosite from this classic American locality from where not many specimens are available, unless they appear in former collections. This piece entered the Joan Astor collection in 1976 and was acquired from Joan Montal, a well-known old dealer from Vilafranca del Penedés (Barcelona). Several rhombohedral rhodo crystals, very well defined, with a very aesthetic pink color. With a globular aggregate of a second generation of rhodo. It stands out on the matrix of quartz crystals. A unique piece.

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Alurgite is a variety of purple muscovite. It was classified 1959 as an intermediate variety between leucophyllite and muscovite. A study of Knurr and Bailey (1986, online) showed that the alurgite, treated as muscovite-2M1 with Mn, contains trivalent manganese (in contrast to divalent Mn-containing "manganophyllite"). This specimen of good size shows us an aggregate of micaceous crystals, with an intense brilliance and good color, in a quartzite rocky matrix. A rare variety of muscovite.