This is a cute vintage Japanese akoya saltwater cultured pearl cadge pendant. 

The pearl measures 6.00mm and is a white/cream color with fantastic luster and rosy overtones.

It is made of solid sterling silver and has a unique design. The pearl is free floating inside the cadge. It comes with a 15 inch chain which is stamped "STERLING". It is a choker. From 1950's-1960's.

All pearls are truly vintage and have only been lightly cleaned.