This is an extremely long Japanese cultured saltwater Akoya pearl necklace. The pearls are 5.00-5.50mm and have good luster with rosy overtones. There are a few blemishes but lovely vintage quality. They are baroque. 

The clasp is 14K solid white gold with a small diamond chip in the center. Stamped "14K".  Total length is 51 inches. Very rare and unique.

All pearls are truly vintage and have only been lightly cleaned and restrung. Medium amount of blemishes which is common for baroque pearls.