NM27AL7: Complex Sphalerite crystal twinned and translucent with good luster and a dominant toasted honey color. On a matrix of Quartz crystals. Sphalerite is a rarity in the otherwise prolific La Viesca Mine.
This aesthetic specimen comes from the Miguel David Martínez collection (nº. 433), whose label we will send to the buyer.
La Viesca Mine, La Collada mining area, Huergo, Siero, Comarca Oviedo, Principality of Asturias (Asturias)  Spain (2016)

Specimen size: 8 × 4.1 × 2.8 cm = 3.15” × 1.61” × 1.10”

Main crystal size: 2 × 1.8 cm = 0.79” × 0.71”