This is a lovely antique art deco Japanese akoya saltwater cultured pearl ring.
The pearls are 2.00-7.00mm round. They have good luster with light rosy overtones.
They are set in solid sterling silver with delicate deco style with milgrain on the edges. It is stamped "SILVER", an old mark for sterling. US size 5.50. From Japan 1910's-1940's.
All pearls are truly vintage and have only been lightly cleaned.