NM29T8: Big cubic crystal beveled by the dodecahedron, transparent and with geometrical color zoning, with color varying between intense blue, lilac and violet. The sample is from material collected for years by Fernando Brugos, former owner of the La Viesca claim. This material has been accurately documented, the different pockets as well as the dates of the finds have been recorded.
La Viesca Mine, Las Calcitas pocket, La Collada mining area, Huergo, Siero, Comarca Oviedo, Principality of Asturias (Asturias)  Spain (02-05/2007)

Specimen size: 10 × 8.4 × 5.8 cm = 3.94” × 3.31” × 2.28”

Main crystal size: 8.6 × 8.1 cm = 3.39” × 3.19”