I TRIED TO MEASURE IT THE BEST I COULD AND YOU CAN CHECK THE PICTURES IT LOOKS TO BE A 6 3/4 SIZE... I WEIGHED IT FOR AN APPROX WEIGH BUT I'M SURE EACH SCALE IS A TAD OFF SO THIS IS AN APPROX. The item "AUTH C DE CARTIER 18KT GOLD BAND/RING SIZE APPROX 6 3/4 WITH CERTIFICATE" is in sale since Monday, August 12, 2019. This item is in the category "Jewelry & Watches\Vintage & Antique Jewelry\Fine\Designer, Signed\Rings". The seller is "carmelbythesea" and is located in Carmel by the Sea, California.This item can be shipped to United States.