referal的code是
Offer is not valid for orders placed through Google Wallet.
Offer is not valid for any gift certificate, jewelry cleaning solution or polishing cloth purchase.
Offer is not valid for any loose diamonds or pre-set engagement rings. When you use our Build Your Own Diamond Jewelry® feature, offer applies only to the setting for a ring, earring, or pendant.
Offer is not valid on sale merchandise.
所以应该可以用在wedding band上，1000-100，500-50，你要的话短我email，给你个refer

Mr Rebates有不少rebate