Ring sizing cost is based on 3 factors:1. Size/width of the band2. Metal type3. How many sizes up or down needed Click here for general ring sizing resources. Not sure of your ring size? Read What is my ring size? and/or have us ship you a ring sizer kit for free or a nominal fee for non-customers. International Ring Sizing Conversion Chart Or use the purchase options on this product page if you're sure you know what you want (or have communicated with our team to know!). Note: One ring sizing may be included free with all new ring purchases from CubicZirconia.com. Afterwards, if finger ring size or comfort level changes we can size your cubic zirconia ring purchased from our company for a nominal fee; rings purchased elsewhere may be sized, but we reserve the right to increase price or remove this non-profitable service at any time).