Mineraux de Multiaxes -
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Fluorine - Dalnegorsk - Russie

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Mineraux français - 1
Mineraux français - 2
mineraux divers-1
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Fluorines françaises
Fluorines françaises-2

Siderite and Sphalerite -1

Sphalerite and Siderite epimorph after Calcite. Broken Hill Mine, Aggenys.
This specimen consists of a siderite/sphalerite cast,which has retained the shape of the calcite crystal that it once enclosed.
This specimen is wonderful because of its brillancy.
Broken Hill, Aggenys, South Africa

11 x 5 x 4 cm

350 euros



Blue tourmalin
Indigolite on floatting and double finished quartz cristal. Superb specimen belonging to G. Emringer's collection.
Other little tourmaline cristals are scattered on and in the quartz, which is transparent in certain zones, and "foggy" in other ones.

Minas Gerais - Brasil
Size of the quartz crystal : 12 x 4,5 x 4 cm
Size of the tourmaline: 5,5 x 0,7 x 0,6 cm

650 euros


Topaze "champagne"

It is the biggest crystal of topaz that we chose. It possesses a beautiful "champagne" color. Edges are perfectly defined and the specimen settles very well. There were no shocks, during the extraction and the specimen is such as found in situ. Two zones underwent natural attacks: on the side of the crystal, the gangue exercised a pressure and so we can see a not formed edge only in this place. Other one bums around who can give to confusion is at the top of the crystal: edges are perfected, however, just behind, there is a zone of micro-splits(micro-cleavages). The base of the specimen rested on its gangue, but it was separed during the extraction, the pocket being "ready to collect". The back of the specimen is a natural cleavage. This specimen is magnificent due to its size and shape, but also due to its color which remains steady, and which is not due only for the thickness of the crystal

Location : Shigar Valley - Dassu - Pakistan

Size : 12 x 13 x 5 cm

750 euros


Hematite on magnetite
Volcan Payun Yatru - Argentina
Hematite pseudomorphs after Magnetite. Specimen with an overgrowth of second generation Hematite as tiny sparkly crystals.Volcan Payun Matru, Malargue, Mendoza, Argentina. 7 x 5 x 3,6 cm

150 euros


Zagora meteorite - Morocco - exeptional specimen

VERY EXCEPTIONAL METEORITE! The size and the weight represent a ratio of 1/40 of the total weight which arrived on Earth.

Iron meteorites are composed largely of nickel-iron metal, and most contain only minor accessory minerals. These accessory minerals often occur in rounded nodules that consist of the iron-sulfide troilite or graphite, often surrounded by the iron-phosphide schreibersite and the iron-carbide cohenite. Despite the fact that some iron meteorites contain silicate inclusions, most have fundamentally the same superficial appearance.

overall size : 10 x 9,5 x 8 cm
weight : 1076 g

680 euros


Quartz et barytine - Cavnic - Maramures - Roumanie
20 x 10 x 10 cm

110 euros

Galène sur matrice
18 cm

90 euros



Amazonite (monocrystal)

location : Pikes Peak - Colorado
Old Bally Museum
specimen size : 11 x 9 x 5 cm

80 euros



Améthyste, La Vigas de Ramirez, Veracruz, Mexique

Very nice amethyste crystal from an internatinaly known location : Vera Cruz.

180 euros




Monocristal de calcite
Amérique du Sud
Minas Gerais - Brasil - Old specimen

145 euros

Goethite et vanadinite - Taouz - Maroc
10 euros


Buisson de quartz - Ouarzazatte - Maroc

30 euros


Wolfram et siderite - Panasqueira - Portugal
spécien spectaculaire

350 euros









Mineralogie de la fluorite
Fluorite mineralogy

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E. Guillou Gotkovsky 2000-2019