This is a lovely vintage Japanese saltwater akoya cultured pearl and yellow gold necklace.

The pearls measure 3.25-7.50mm with good luster and light rosy overtones. They are a white color and graduated. Light natural blemishes. 

The clasp is solid 14K yellow gold and has a modern basket weave style. It is stamped "14K". Total length is 18in. From the 1950's-1980's. 

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