Mineral: Quartz (variety smoky)
Locality: Cavradi, Curnera Valley, Tujetsch (Tavetsch), Vorderrhein Valley, Grischun (Grisons; Graubünden), Switzerland
Dimensions: 20,0 x 15,0 x 12,0 cm
Description: Main crystal size: 9,0 cm
Gwindel with good torsion angle and crystals of limpid smoky quartz
MIM number 820
Photographer: Augustin de Valence (Aïnu)
All pictures, text, design © Forum FMF 2006-2024