Konstantino Sterling Silver & 18K Yellow Gold London Blue Topaz Station Necklace. Necklace measures 18 1/2" in length with (2) 22 mm X 12 mm & (4) 19 mm X 8.5 mm london blue topaz stations and (4) 11 mm X 6 mm 18KY/SS stations, fancy toggle clasp has cabochon rhodolite garnet accents. SKU 650-597