This is a brilliant blue baroque Japanese saltwater akoya cultured pearl, white gold and diamond necklace. 

The pearls are a medium blue/gray color and are very baroque. They have light rosy pink overtones and good luster. Medium amount of natural blemishes as is common with baroque pearls. Some variation in color and luster. They measure an average of 5.00mm. 

Clasp is fishhook style with a single natural diamond chip in the center. It is stamped "10K" for solid gold. Total length is 17 inches. 

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