AN ART DECO ONYX AND DIAMOND BAR BROOCH, CIRCA 1925 Set with two tapering onyx cabochons within a pierced surround set with old brilliant and single-cut diamonds, millegrain detailing throughout, mounted in platinum and gold, diamonds approximately 1.10ct, length 6.3cm

Diamonds: Bright and lively, approximately I/J colour, SI1/SI2 clarity Onyx: some very slight pitting evident under 10x magnification. Reverse with some adhesive evident from setting of onyx panels Pin is yellow gold - pin moving slightly, catch slightly worn Light surface wear Metal unmarked, tested by the jewellery department to be platinum (pin 14K gold) Total gross weight approx. 8.3g