This is a German 835 sterling silver antique-style ring inlaid with chrysoprase. Silver: The "835" stamp is engraved on the inside of the ring, indicating a silver content of 83.5%. Compared to the more common 925 silver (92.5%), 835 silver is slightly harder and was often used in the making of various silver jewelry in Europe in the past, holding considerable historical value and collectible significance. Chrysoprase: A chrysoprase gemstone is set in the center of the ring, boasting a rich, vibrant green hue. Chalcedony is a cryptocrystalline quartz, deriving its green color from the presence of minerals such as nickel. It has a smooth, delicate texture and a soft luster. Sizes can be seen in the image.