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 :316 stainless steel (male)14kt black filling gold (female) main stone: blue sapphire color: black + blue quantity :1 ring high quality in the European Union and the United States quality standard all rings are one ring size of the United States. Please view the international size chart photos. Diameter 6 = approx. 16.5 mm diameter 7 = approx. 17.5 mm diameter 8 = approx. 18 mm diameter 9 = approx. 19 mm diameter 10 = approx. 20 mm diameter 11 = approx. 20 mm diameter 12 = approx.