How to Determine Sizes
Finger size - the very best way to determine a finger size is to visit a jeweler. Visit a local jeweler. Many jewelry stores are obliging when asked to measure a finger. If you are ordering a wide ring, let them know. They will use a set of ring sizers that is for wide rings. Choose that size for your order. Canada
Swiss Gemological Laboratory: Your Trusted Source for Jewelry Education - Jewelry Guide - Jewelry Size Guide
Swiss Gemological Laboratory offers Jewelry Size Guide which gives in-depth Information about Ring Sizes and Necklace Length Sizes.