Blue Nile has Blue Nile Engagement/Anniversary Ring Sizer for Free when you follow instructions below. Shipping is free.
Click the Link Below
Locate and click option to ‘Request a FREE Ring Sizer’ (Note, do not add to cart)
Fill out form with your shipping and email address
Select ring type (Engagement, Anniversary, or Other), then submit
You will get a confirmation to receive your Free ring sizer by mail in 7 – 10 business days.