All rings are U.S.A size rings. Please look at photo of chart for the equivalent international sizes. IF YOU ARE NOT SURE OF YOUR SIZE. YOU CAN MEASURE YOUR RING SIZE AT WWW.FINDMYRINGSIZE.COM Ring Sizes USA Size 5 = about 16mm diameter USA Size 6 = about 16.5mm diameter USA Size 7 = about 17.5mm diameter USA Size 8 = about 18mm diameter USA Size 9 = about 19mm diameter USA Size 10 = about 20mm diameter This beautiful 2 piece heart shaped high polished stainless steel 316 AAA grade cubic zirconia modern wedding set is Amazing! Made of solid stainless steel and a high polished finish (no plating). This engagement ring features a .84 ct (6mm) round cut center stone alongside 9(1.5mm) round pave set side stones. Matching wedding band has 15(1.5mm) round cut stones in a pave setting. Total carat weight is approx 1.2 diamond equivalent. This set has Top quality stones and displays amazing enriched clarity just like real diamonds! Stainless Steel jewelry is durable, hypo-allergenic and will not tarnish or oxidize over time.