Quartz (doubly terminated) with hydrocarbon inclusions

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

Specimen size: 5.6 × 5.5 × 3.6 cm = 2.20” × 2.17” × 1.42”
Main crystal size: 5.5 × 3.9 cm = 2.17” × 1.54”