Cubic Zirconia Ring in Sterling Silver ( Size 7 ) Size 7 Cubic Zirconia Ring in Sterling Silver Free Shipping and 100% Satisfaction Guarantee. This product comes with a FREE contemporary Gift Box. All our gold items are responsibly sourced and the majority is made from environmentally processed recycled gold. All diamonds used in our jewelry are conflict free and 100% in compliance with the Kimberly Code of Conduct.