Red Oyster Shell Inlay Silver Chief Head Ring Size 12-1/2 NS43329MATERIALS: Sterling silver and Red Oyster Shell. MEASUREMENTS: Ring is a size 12 1 2, it measures approximately 1 1 8" long and 3 4" at widest point. DESCRIPTION: Check out this lovely ring! The ring is handmade out of genuine sterling silver and real Red Oyster Shell inlay. The inlay is carefully set, while imprinted work can be seen creating a marvelous Chief Head design. The ring is stamped sterling and hallmarked.