A fine, superior workmanship 18k ring with alternating swirling bands of channel set sapphires and diamonds. Even in yellow gold, rather than the typical white gold, the gemstones are dazzling. The sapphires and diamonds are round cut and graduate in size from the sides to the center. The ring is stamped with the maker's hallmark, but I haven't identified the maker; the quality of the work reminds me of Le Vian.
There are 27 rich royal blue sapphires 1-2mm diameter for an approximate .5 TCW. The 18 white diamonds are 1-2mm diameter, of G,H color and VS1 clarity and have an approximate .4 TCW. The top of the ring is 8mm knuckle to knuckle and 4mm wide at the back of the band. It weighs 4.8 grams and is size 6 3/4; it can be re-sized.