18kt yellow gold ring central prong-set faceted blue gem, possibly Tanzanite, surrounded by a diamond halo and diamond accents to shoulders of band. Colored gem measures approx. 7.5mm x 5.5mm. Stamped "18K 750 J by A&D DO39". Total approx. weight is 2.4 dwt (gross). From the estate of a world traveler and gemologist. Dimensions: ring is an approx. size - 6 3/4 Condition Report Good, with light surface scratches and minor dings/dents. No definitive statement is being made as to whether colored gems are natural, synthetic or treated. Halo is missing (2) diamonds.