Art Deco Onyx & Diamond Necklace

Set with an Oval cabochon onyx measuring approx. 27x20mm., framed by one Old European cut diamond weighing approx. 0.07ct., one Single cut diamond weighing approx. 0.06ct. & twenty-seven Rose cut diamonds ranging in size from 1-2.5mm., fashioned in platinum. On a 14k white gold rope chain.