Circular is rolling out a new tool along with its next smart ring that will take the guesswork out of figuring out your ring size.

These tools are specifically designed to let you accurately measure your ring size at home. Best Brilliance also offers a ...

Don't guess at ring size. A ring that's too large might slip off a finger, especially when its wearer's hands are cold, wet, or both. A ring that's too tight is a pain to get on and off and can be ...