NT27AM5: Group of crystals with cubic habit along with highly developed unusual forms of the tetrahexahedron. Transparent, lustrous, and uniform pale blue. The specimen comes from the Pedro Hernández collection and is from the San Lino mine, the precursor to the later Jaimina and Emilio mines located in the same area.
San Lino Quarry, Aurora vein, Caravia mining area, Cerracín, Prado, Caravia, Comarca del Oriente, Principality of Asturias (Asturias)  Spain (±1981)

Specimen size: 6 × 6.2 × 4.1 cm = 2.36” × 2.44” × 1.61”

Main crystal size: 1.2 × 1 cm = 0.47” × 0.39”