Ross-Simons - 4.40ct t. w. London, Sky Blue Topaz, .50ct t. w. White Zircon Ring, Blue Enamel Over Sterling. Size 8. Bound to be a true blue favorite, this remarkable ring showcases an icy 4.00 carat square cushion-cut sky blue topaz, flanked by .40 ct. t. w. London blue topaz gems. .50 ct. t. w. white zircon rounds add additional shimmer in richly hued blue enamel. Crafted in 18kt gold over sterling silver. 1/2" wide. Blue enamel, white zircon and blue topaz ring. Blue Topaz birthstones are…