Quartz (doubly terminated) with hydrocarbon inclusions

La Cabaña, Berbes mining area, Valdelmar, Berbes, Ribadesella, Comarca Oriente, Principality of Asturias (Asturias)  Spain

Specimen size: 10.3 × 9.2 × 6.6 cm = 4.06” × 3.62” × 2.60”
Main crystal size: 7.7 × 5.2 cm = 3.03” × 2.05”