Quartz

À Giraud Mine, La Gardette mining area, Villard-Nôtre-Dame, Le Bourg d'Oisans, Grenoble, Isère, Auvergne-Rhône-Alpes  France

Specimen size: 14.5 × 14.3 × 3.3 cm = 5.71” × 5.63” × 1.30”
Main crystal size: 2.4 × 0.5 cm = 0.94” × 0.20”