Captivating Natural Sky Blue Topaz & Natural White Zircon 3 Stone Ring In 925 Sterling Silver. ~Size: 7. ~2.10 ct Oval Natural Marambaia Sky Blue Topaz Prong Set. ~.64 cttw (2) Round Natural Marambaia Sky Blue Topaz Prong Set. ~.30 cttw Round Natural White Zircon Prong Set. ~925 Sterling Silver. ~Comfort Style Band. ♡New Comes Boxed♡