US size 7-11.<br />Name:Cubic Zirconia Gemstone Rings<br />Material:316L Titanium Steel<br />Color:silver&red，silver&black，silver&purple，gold&red<br />Package:1*Ring with 1*Opp Bag<br />Ring size information:<br />7=diameter(mm 17.4，   Perimeter mm 55.<br />8=diameter(mm 18.2，   Perimeter mm 57. <br />9=diameter(mm 19，      Perimeter mm 59.8.<br />10=diameter(mm 19.9， Perimeter mm 62.4. <br />11=diameter(mm 20.7， Perimeter mm 65.<br />12=diameter(mm 21.5， Perimeter mm 67.5.