C.1900-1910. An American Arts & Crafts black opal ring. The opal is beautifully saturated, and shows a magical glow. The ring is 14k yellow gold, and the gold has matte finish. The ring has an open-back setting, and the back side appears to have a potch. With black opals, it is common that the potch can dehydrate and fade as well like this. The ring has been preserved beautifully. Overall it is in great condition. 

Face (gold frame): Approximately 18mm x 9mm
Ring size: US 5 1/2 (resizable)