DG Minéraux - David Gouyon

Fluorite with shiny crystals associated with barite and quartz. Piece from the Berbès sector in northern Spain. Its weight is 126 grams.7,3 x 4,8 x 3,2 cmReference : 0149

Bournonite crystals from the department of Potosi in Bolivia, the largest measuring 20 mm. This specimen weighs 42 grams.3,6 x 3 x 2,4 cmReference : 0138

Rare andorite crystal, of good size for the species. It is 25mm long and weighs 15 grams (measurements excluding base). This collector's specimen comes from Bolivia, San José de Oruro.2,5 x 2,2 x 0,6 cmReference : 0135

Apple green fluorite partially covered with quartz, hexagonal calcite crystals and spherical chalcopyrite crystals. The top of the coin features bright well-formed fluorite crystals. This mineral weighs 333 grams.8,9 x 6,9 x 4 cmReference : 0124

Shiny barite piece from the Peyreblanque mine, in Tarn, France. This mine is located in the town of d'Alban, a few kilometers from the Montroc mine. Its weight is 233 grams. Old collection Alain Martaud.9,5 x 6 x 5 cmReference : 0120

Quartz specimen from the Ploemeur kaolin quarry, Morbihan, France. Its weight is 567 grams. Typical mineral of the sector from an old collection. Small crack at the back of the main point.12,5 x 7,2 cmReference : 0106

Quartz sample from the Vizille area, Isère, France. The crystals measure up to 1.5 cm. It weighs 664 grams. Presence of some affected crystals.9 x 8 x 5,5 cmReference : 0105

Rare Liveingite from Switzerland. The 5mm crystal is on a 28mm die.2,8 x 2,2 x 1,8 cmReference : 0077

Specimen of crested beige barite on massive pink barite sprinkled with chalcopyrite crystals. A classic of German mineralogy from the Dreislar mine (closed in 2007). Its weight is 150 grams.8 x 3,5 cmReference : 0068

Rare zunyite crystal on matrix from Qalat-e Balat Salt Dome, Bandar-Abbas Region, Hormozgan, Iran. This crystal, tetrahedral with marked truncations, comes from a discovery of 2018. Specimen rich in hematite particles, giving it a shiny appearance. Weight of 30 grams.3,4 x 1,8 cmReference :...

Aesthetic manganocalcite with multiple endings. Light rosé specimen of 129 grams from Dalnegorsk, Russia. This shock-free calcite is UV reactive. The point of attachment shows a resumption of crystallization.9,5 x 3 cmReference : 0050

Brilliant sample of muscovite with crystals measuring up to 4 cm. Beautiful piece of 478 grams.11 x 8,5 x 8 cmReference : 0043

Aesthetic piece of native copper from Michigan, United States. It is intentionally preserved with its patina, a bath of a few seconds in hydrochloric acid would remove the oxidation if you wish. It weighs 185 grams.9 x 4 x 6 cmReference : 0034

Interesting specimen of serandite of pink color. It has two twinned and well-formed crystals of serandite and a few crystals of aegirine. The largest crystal measures 10mm across.1,8 x 1,5 cmReference : 0033

Sample from the well-known Trepca mining complex, Kosovo. It features octahedral quartz crystals and galena crystals. Its weight is 471 grams.14 x 7,5 x 4 cmReference : 0030

Specimen of blue barite with a brown limonite matrix offering a beautiful contrast of colors. Barite crystals are based on gray and white quartz. Its weight is 426 grams.11 x 6,5 cmReference : 0022

Moroccan plate of natural red quartz. The crystals are well formed and rich in hematite. The matrix is ​​made of transparent quartz with a red band on it. Its weight is 563 grams.11 x 6 x 4 cmReference : 0017