Quartz with hydrocarbon inclusions

La Cabaña, Valdelmar, Berbes mining area, Berbes, Ribadesella, Comarca Oriente, Principality of Asturias (Asturias)  Spain (±1987)

Specimen size: 4.7 × 3.8 × 3.2 cm = 1.85” × 1.50” × 1.26”
Main crystal size: 2.3 × 1.4 cm = 0.91” × 0.55”