Quartz (variety smoky quartz) with Orthoclase and Mica
Navazales Quarry (El Berrocal, Los Gallegos), La Cabrera pluton, Valdemanco - Bustarviejo, Comarca Sierra de Guadarrama, Community of Madrid Spain (03/2001)
Specimen size: 14.4 × 11.6 × 6.7 cm = 5.67” × 4.57” × 2.64” Main crystal size: 4.5 × 3.5 cm = 1.77” × 1.38”