Sterling Silver & Swarovski Topaz Crystal Necklace. Six 4mm Swarovski Topaz crystals, each sandwiched between two 2mm Sterling Silver round beads, highlight this Sterling Silver cable chain. Three 6mm Swarovski topaz crystals, each between two 3mm SS rounds, dangle from SS "Y" shaped links. Finished with a 6mm SS clasp. Approx. length is 16 inches.