TRIO, 18CT TWO-TONE GOLD, SOUTH SEA PEARL AND GEM-SET BROOCH Modelled as a Maltese cross, centring a button-shaped South Sea pearl measuring approximately 14.7mm. within a surround of brilliant-cut diamonds, pear-cut sapphire and oval rubies cut en cabochon and further brilliant-cut diamonds, the sapphires together weighing approximately 2.00 carat, the rubies together weighing approximately 6.00 carats and the diamonds together weighing approximately 2.20 carats, measuring 42mm x 42mm.