This is a lovely vintage Japanaese saltwater cultured Akoya pearl and sterling silver ribbon pendant by Tasaki.

The pearls are 7.25mm round. They have fantastic like luster with bright rosy overtones.  They are stamped "T" in a clamshell for Tasaki and "SILVER" for sterling silver. Comes with a 18 inch chain. From Japan 1960's-1980's. 

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