between baguette cut diamond shoulders, mounted in platinum, signed 'CHAUMET' within, Chaumet workshop mark to back of shank, French assaymark for platinum, accompanied by GIA report no. 6223770879 for the 6.37ct diamond giving the E SI2 grade and the diamond shows no fluorescence Diamond 10.73 x 10.00 x 7.29 Weight: 5.5g
Art Deco sapphire and diamond bow brooch by Mauboussin, Paris, the openwork centre of buckle design featuring an oblong cushion cut sapphire of approximately 1.25ct,