Collier with diamonds and blue topaz

MATERIAL: yellow gold, diamonds and blue topaz DESCRIPTION: necklaces made in rectangular plates, each centered by topaz and alternating to a trapezoidal mesh entirely embellished with brilliant-cut diamonds, in the middle of three large geometric plaques centered by blue topaz and brilliant-cut diamonds, bears the mark 18 kt MEASURES: open 39 cm WEIGHT: blue topaz ct 133.00, diamonds ct 3.48, color G, clarity SI, 169.70 g