A magnificent Art Deco Style statement piece in gemstone jewelry. This chocolate brown smoky quartz is exceptional from every angle. The center quartz stone is large measuring 18mm X 10mm X 5mm with an estimated carat weight of 4.77. The color in a photos looks a little green in hue from our lighting but the ring is crystal clear translucent brown in color. The setting is gorgeous with open filigree work all the way around. The ring is marked Sterling for silver purity and GNA Thailand for a makers mark. All of our pieces are safely tested. This ring is a size 7 3/4 and circa early 1980s. It is in excellent estate condition.