“Reference: TR71AE7 Very aerial aggregate, on matrix, of thick lenticular crystals with very well defined faces and edges, with slight curvatures and a very intense luster, with transparencies on the edges and the famous rich blue color (“electric blue”) typical of the best samples from Milpillas. The Azurite crystals are partially coated by balls of fibrous Malachite that has a silky luster. Milpillas Mine, Cuitaca, Municipio Santa Cruz, Sonora  Mexico (11-12/2013) Specimen size: 5 × 2.9 × 2.5 cm = 1.97” × 1.14” × 0.98” Main crystal size: 2.4 × 1.4 cm = 0.94” × 0.55” ”