Quartz (doubly terminated) with hydrocarbon inclusions

La Cabaña, Berbes mining area, Valdelmar, Berbes, Ribadesella, Comarca Oriente  Spain

Specimen size: 9.2 × 4.8 × 3.3 cm = 3.62” × 1.89” × 1.30”
Main crystal size: 9.2 × 4.3 cm = 3.62” × 1.69”