Gothic Solitaire Japanese Saltwater Akoya Cultured Pearl Buttercup Ring- Sterling Silver Sz 5This is a unique vintage gothic style Japanese akoya saltwater cultured pearl solitaire ring. The pearl is 7. 50mm round. It has great luster with bright rosy overtones and is a white cream color. It is set with silver claw prongs with a buttercup style setting. It is not stamped but solid sterling silver. US size 5. Japan 1920's 1940's. All pearls are truly vintage and have only been lightly cleaned. Some tarnish and patina on metal.