Blue Nile realizes that you may not know the ring size for a given finger, and they want to help by offering a FREE plastic ring sizer with free shipping. Head over to their website here then click on the "Request a FREE Ring Sizer" link. Fill out the form to order your free ring sizer then look for it to arrive in your mailbox in about two weeks.

Blue Nile

At Blue Nile you'll find high-quality diamonds certified by the most respected independent diamond grading labs. You can create your own jewelry — choose the right diamond and we'll set it in your favorite earring, pendant, or ring design. Every order is shipped free, guaranteed and returnable within 30 days, so you can be sure you made the right decision.