18ct white gold, tourmaline and diamond pendant necklace, of cluster design, centring a claw-set oval-cut tourmaline weighing approximately 6.54 carats, within a double halo of grain-set brilliant-cut diamonds together weighing approximately 0.61 carats, suspended from a fancy link chain completed by a parrot clasp, pendant length 26 mm, width 19 mm, chain length 460 mm, gross weight approximately 10.5 grams.