18ct Yellow Gold Diamond Square Drop Necklace, P558CB. This contemporary necklace features sparkling brilliant cut white diamonds that are pave set inside an open square frame of 18ct white gold. The square is set at the bottom of a highly polished 18ct yellow gold bar through which an 18 inch 18ct yellow gold chain passes at the top.  At C W Sellors, we have an expert team of diamond specialists who handpick and grade each jewel to meet our high standards and a team of talented in house designers who combine their talents to bring you our exclusive Diamond collection. Chosen for their rare white quality, each diamond we use has a minimum clarity of VS and minimum colour of G-H. You can find other diamond pieces to complement this ring online and in store.  All articles purchased from C W Sellors are lovingly and securely dispatched with our elegant jewellery packaging.