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 high polished AAA grade cubic zirconia engagement ring is amazing! Made of solid stainless steel with a high polished finish (no plating). This ring features a .85 carat(6mm) square cut solitaire stone in a prong setting along side 18(0.8mm) round cut stones in a paved setting. The total carat weight is approx. .915 diamond equivalent. This ring 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.