A fine specimen of Willemite from the Tsumeb Mine, Namibia. The Willemite forms crystalline interconnected bubble-like spheres grading into a botryoidal formation. The surface of the Willemite is a sparkling druse of crystal terminations, with scattered well formed prismatic crystals. The Willemite grades from a sea green near to the base of the specimen to a rich black due to Mn-Fe oxide inclusions. The Willemite has grown on a creamy Dolomite matrix with light green Malachite.