Antique Art Nouveau or Art Deco chrysoprase ring, marked Sterling, Germany. The chrysoprase stone is striking for its large size and protruding shape: it stands 5/16" above the surface. It is bordered with trim and flanked on either side by two nicely detailed leaves with a curling vine stem. The ring measures 1/2" north to south and the width, including the leaves, is 3/4". It is size 5-1/4 and the condition is excellent with no scratches or chips.