This Tungsten Ring Is a 10mm wide Dome with an Ultra-Bright finish. We recommend visiting more than one jewelry store to measure your finger. Your local mall is a great place to go (it is a free service). Because printable and plastic finger sizers can be inaccurate we recommend that you do not use them to size your finger. There will be a 20% return fee on all rings because Amazon fees are not refundable. Please see our Amazon FAQ's page for more information not found in this description.