6” IN CIRCUMFERENCE ON THE INTERIOR (INCLUDING GAP), 7/7” ACROSS THE FACE. THE RING IS SIZE 6.75. THE CONNECTING CHAIN, INCLUDING CENTERPIECE IS 4 3/8” LONG. GROSS WEIGHT:24.5 GRAMS. THE SET IS TARNISHED, WE LEFT THE CLEANING TO THE NEXT OWNER. Questions are welcome if I missed anything in the description, specifics, or additional information is needed. Other kinds of payments are accepted.