Significant topaz necklace, 585 white gold. total weight: approx. 38.3 g. luxurious necklace set with a large central topaz of approx. 49.00 ct, and a halo of marquise and brilliant-cut diamonds totaling approx. 2.50 ct. g-i/vvs-si. dimensions: length (necklace): approx. 51.0 cm. pendant: 43.0 x 29.0 mm. push-back clasp with safety catch.