A great designer cabochon of Montana Agate featuring a multitude of dramatic black dendrites and ribbons floating in glowing translucent chalcedony in this one of a kind gem of this great agate. This stone has a glossy high polish front and back and is professionally cut. Slightly beveled to facilitate setting, it will look beautiful set in one of your designs or as a terrific addition to your collection. This stone measures 39x39 mm and is 5 mm thick, the weight is 72 cts. You will love this stone! As always, Thanks for looking!