This is a unique semi-baroque blue & white Japanese saltwater akoya cultured graduated pearl necklace.

The pearls measure 5.50-9.00mm with good luster, rosy overtones and a color ranging from white to cream to gray and blue. The majority have good luster but some are a little patchy with less lustrous areas. Quite a few natural blemishes.

The clasp is solid 10K white gold and is a filigree deign. It is stamped "10K". Total length is 17.75 & 19 inch. From mid-century or earlier. 

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