These azurite crystals are from the Milpillas Mine in Cuitaca, Mun.de Santa Cruz, Sonora, Mexico. Mining at this locale began in 2006 with the extraction of copper minerals. Thirty-six mineral species have been identified at the mine including world class azurites. It is a secondary copper carbonate containing the elements Cu, C and O. Mining started in several copper oxide zones where the carbonate minerals including azurite were found. This specimen consists of dickite crystal covered quartz matrix that hosts a variety of azurite crystal habits including; tabular, spearhead and coxcomb, They are translucent near the surface and edges under bright light and contrast nicely against the white dickite crystals. The color and luster are exceptional This piece measures 1 3/4 x 1 1/2 x 1 1/4 inches or 45 x 38 x 32 mm.