Carelle Blue Topaz & Diamond Stacking Ring in 18k Yellow GoldArtisan Handcrafted. Made by the fine New York City Jewelers at Carelle. This gorgeous Carelle blue topaz diamond stacking ring is heavenly! Finished in 18 karat yellow gold. Mesmerizing and cut for maximum brilliance. One 1. 01 carat and one . 26 carat blue topazes decorate the artful band. Full of feminine power and style! A single accent diamond sparkles at center of the modern ring. A stacking ring that pairs well with most yellow gold jewelry