NB76AL0: Group of crystals of cubic habit beveled by the rhombododecahedron, translucent, very deep blue-violet, on matrix with small Quartz crystals. The specimen, which is a floater, comes from the Jaume Vilalta collection (No. 0916) whose label we will send to the buyer.
La Viesca Mine, La Negrina pocket, La Collada mining area, Huergo, Siero, Comarca Oviedo, Principality of Asturias (Asturias)  Spain (03-04/2006)

Specimen size: 13.4 × 9.8 × 6.5 cm = 5.28” × 3.86” × 2.56”

Main crystal size: 4.3 × 4.1 cm = 1.69” × 1.61”