Quartz (variety smoky)

Oberalpstock Mountain, Strem Valley, Tujetsch (Tavetsch), Vorderrhein Valley, Grischun (Grisons; Graubünden)  Switzerland

Specimen size: 6.2 × 4.4 × 3.4 cm = 2.44” × 1.73” × 1.34”
Main crystal size: 5.5 × 2.4 cm = 2.17” × 0.94”