Quartz (variety faden) with Calcite

Lignarre Valley, Bourg d'Oisans, Isère, Auvergne-Rhône-Alpes  France (1991)

Specimen size: 10.8 × 8 × 7.5 cm = 4.25” × 3.15” × 2.95”
Main crystal size: 3.2 × 0.5 cm = 1.26” × 0.20”