TB71AJ3: Extraordinary group of crystals, one of them clearly dominant, very sharp with vivid transparencies, very intense bright and with the famous vivid and deep blue color (“electric blue”) typical of the best samples from the locality. With small coatings of fibrous Malachite.
The specimen has been photographed and published in the magazine ‘Paragénesis’, number 01/2019, page 78
Milpillas Mine, level 1140, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (2010)

Specimen size: 6.2 × 2.4 × 2.8 cm = 2.44” × 0.94” × 1.10”

Main crystal size: 6.2 × 2.3 cm = 2.44” × 0.91”