This is a lovely quality strand of vintage Japanese saltwater akoya cultured pearls and white gold.

The pearls measure 6.50-7.00mm with very good luster and rosy pink overtones. 

The clasp is solid 10K white gold and is a filigree style. It is stamped "10K". Total length is 14.25 inch. It is a tight choker and may not fit everyone. From mid-century. 

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