This is a lovely vintage engraved bypass Japanese saltwater akoya cultured pearl & sterling silver ring.
The pearls measure 5.50mm and round. They have good luster with light rosy overtones.
It is set in solid sterling silver. It has engravings and detailed prongs. It is stamped “ING” for sterling silver. Total is a US size 4 1/4. Great little pinky ring. From Japan, 1920 to 1950’s.
All pearls are truly vintage and have only been lightly cleaned. It has an old sizing mark on the inside.