Konstantino Sterling Silver & 18K Yellow Gold Green Agate & London Blue Topaz 36" Station Necklace. Necklace has (6) 38.5 mm long X 17.5 mm wide green agate/london blue topaz stations & (12) 13.5 long X 9 mm 18KY/SS stations with fancy end tab & lobster claw. SKU 640-58