Cassidy 14K White Gold Pear-Cut Tanzanite Ring
Free Expedited Shipping over 200+
60-Day ReturnsLearn More
2 Year Warranty
Using an existing ring that already fits you well, you can use a ruler to measure the inside diameter of this ring. Just use a ruler to measure straight across the inside of the ring from edge to edge. Take the diameter measurement in millimeters, and then use our conversation chart below to find your ring size.