AZURITE - Cu3[OH/CO3]2 Sharp clean blades in nice true Rosetta formation of dark BRILLIANT blue with lighter blue colors at tip of crystals. Weight 0.11 lbs. This specimen is 2-1/4" wide by 1-3/4" deep by 1" high. From the Shilu Copper Mine, Yangchung, Guandong Prov., China . No faults.