You may determine your ring size using two different methods
1) Take an existing ring that you already own and measure the inside diameter with a ruler. Match that number to the "Inside Diameter" column. If the measurement falls between two sizes, it is recommended to round up to the nearest size.
2) Using a piece of string, floss, or strip of paper, measure the circumference of the base of your finger. If you have larger knuckles, consider taking a measurement of the circumference of your knuckles as well. Mark the total circumference of your finger using a pen and measure the length with a ruler. Match that number to the "Inside Circumference" column. If the measurement falls between two sizes, it is recommended round up to the nearest size. Pro tip: To ensure accurate ring sizing, it is always a good idea to take measurements at different times of day so that you can get the most accurate average of your overall ring size.
Depending on the look you are trying to achieve, you may want to experiment with different lengths of chains. Most of our chains come on an adjustable clasp that can vary 1"-2" smaller than the posted length on the "Dimensions and Specifications".