Features: 1.Durable Material: Zircon copper material stable performance can be used for years without deformation fashionable and shiny can be worn by both men and women as a ring. 2.Accessories to Wear: Premiums clothing accessories for formal and casual occasions such as birthday parties family gatherings and everyday wear. Add more character and personality to your everyday wear. 3.Unique Shape: Zircon setting which can perfectly match your various styles of clothes and give you more personality and charm.Rings stacked with a highlight of personality. 4.Suitable for Occasions: Perfect for Valentine's Day Gifts Mother's Day Gifts Halloween Gifts Christmas Gifts Anniversary Gifts Birthday Gifts Wedding Gifts Party Gifts Graduation Gifts Back to School Gifts. 5.After-sales Service: If you have any problem please contact us immediately we will help you solve it as soon as possible. Specifications: Material:Zircon copper Size: USA UK RU FR CA BR DE Circumference(cm) Diameter(cm) 7 N 1/2(O) 17.3 54.4 7 17.3 17.3 5.44 1.73 8 P 1/2(Q) 18.1 57 8 18.1 18.1 5.7 1.81 9 R 1/2(S) 18.9 59.5 9 18.9 18.9 5.95 1.89 10 T 1/2 19.8 62.1 10 19.8 19.8 6.21 1.98 11 Y 1/2 20.6 64.6 11 20.6 20.6 6.46 2.06 12 Y 21.4 69.1 12 21.4 21.4 6.72 2.14 Notice: 1.Actual color may be slightly different from the image due to different monitor and light effect. 2.Please allow 1-3cm deviation due to manual measurement. includes: 1 * Woman Ring