Specification: provide exquisite jewelry for your hands, making you elegant and charming. Suitable for wedding, engagement, banquet, date and other occasions. The perfect couple ring, this is a great gift for your lover and yourself. Material :316L stainless steel (male)925 silver filling (female) main stone: diamond style: female ring set, male ring 1, all rings are made in the United States of America one ring size. Please view the international size chart photos. A U.S. size 5 = 16 mm diameter size 6 = America is about 16.5 mm diameter size 7 = 17.5 mm diameter size 8 = 18 mm diameter size 9 = the United States about 19 mm diameter size 10 = America about 20 mm diameter size 11 = 20.5 mm diameter size 12 = 21.5 mm diameter size 13 us = 22.5 mm in diameter.