Art Deco Engraved Japanese Saltwater Akoya Cultured Pearl Ring- Sterling Silver Sz 6This is a stunning antique art deco Japanese akoya saltwater cultured pearl ring. The pearls are 3. 75 5. 00mm round. They have great luster with rosy overtones. Nice quality. They are set in solid sterling silver with delicate deco style engraving down the sides and milgrain on the edges. It is stamped "SILVER", an old mark for sterling. US size between 5 3 4 6. From Japan 1920's 1940's. All pearls are truly vintage and have only been lightly cleaned.