This is vintage mid-century Japanese saltwater akoya cultured pearl pendant by Fukuya. 

The pearl measures 7.25mm and is a white color with great luster and rosy overtones.

It is set into a swirl design with hand engraving and a braided twist detail. Pendant drop is 1 inch, chain is 16 inches. It is stamped "SILVER" for sterling silver. Comes in the original box which is signed "FUKUYA". From Japan, 1950's-1980's.

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