A Fantastic designer cabochon of dramatic black Psilomelane Plume in Rhyolite from the Crown of Silver mine in Mexico. Beautiful black metallic plumes, bands and other assorted weirdness in a reddish Rhyolite matrix. Really beautiful! An extraordinary and well designed gem with fantastic patterns and details. It has a glossy high polish front and back and is professionally cut. Slightly beveled to facilitate setting, it will look gorgeous set in one of your designs or as a terrific addition to your collection. This stone measures 41x20 mm and is 5 mm thick the weight is 41 cts. Don't let this one get away! As always, Thanks for looking!