Colorful polished Azurite hemisphere from Poteryaevskoe Mine, Rubtsovskoe Cu-Zn-Pb deposit, Russia. It is a half ball with an amazing royal blue color - very vivid and rich. Featuring Azurite aggregates with marvelous Agate like bands with different color intensity. At the center are seen irregular formations. For references see the issue of The Mineralogical Record vol. 45, # 4, July-August 2014. In superb condition. Polished.
Striking blue!