OnDiamonds.com offers a 100% satisfaction guarantee on all our diamonds and jeweler (except for custom-designed jewelry or special orders). You have 30 days from the invoice date to inspect your purchase and make a decision. If for any reason you decide not to keep your purchase, we will accept them back in its original condition free of charge. If you have any questions, please call us at 888-5-ONDIAMOND (888-566-3426) to speak with an OnDiamonds.com service representative. You can find instructions on how to return your OnDiamonds.com purchase here.