Diamond necklace, the brilliant-cut diamond weighing 4.00 carats is collet-set in 18ct white gold and suspended on an 18ct white gold Omega chain, pendant diameter approximately 12 mm, chain length approximately 400 mm, Italian maker's mark., accompanied by a GSL report numbered AA45305, dated 26 October 2009, stating that the 4.00 carat diamond is I colour, SI1 clarity. Provenance: jewels, Sotheby's Australia, 13 September 2010, lot 113, illustrated. Private collection, Sydney, acquired from the above