Mineral: Quartz
Locality: Les Rivoirands, Vizille, Grenoble, Isère, Auvergne-Rhône-Alpes, France
Dimensions: 7,0 x 6,0 x 9,0 cm

Description: Main crystal size : 5,5 cm Y-shaped sharp and very prominent twin, surrounded by quartz needles; the group seems to be a floater and is covered with a thin layer of iron oxide giving it a beautiful yellow-orange iridescent color, which is why it has not been chemically removed, as is often the case. MIM number 1631 Photographer : Augustin de Valence (Ainu)

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