Important ring in white gold, diamonds and violet-blue tanzanite

MATERIAL: white gold, diamonds and violet-blue tanzanite WEIGHT: large ring made with oval tanzanite mounted with four intermittently embellished jaws laterally, on the base and on the ring with brilliant-cut diamonds, bears the 750 mark MEASURES: ring 6.5 WEIGHT: tanzanite ct 18.50, approx.1.0 ct diamonds, G / H color, VS clarity, 13.1 g