A SAPPHIRE AND DIAMOND BROOCH The openwork brooch set with a central circular-cut sapphire, within a surround of old brilliant-cut diamonds in square millegrained settings, further issuing curved rows of old brilliant, single and rose-cut diamonds, mounted in platinum and gold, diamonds approximately 5.75cts total, length 7cm

Sapphire: Good transparency with zoning and windowing evident, some inclusions under 10x magnification Diamonds: Bright and lively - estimated colour H/I/J, estimated clarity SI with some VS Solder repairs evident to reverse - mostly around fittings. Brooch fitting a later replacement - and both ends threaded / detachable. Additional fittings to reverse also suggest central plaque is detachable and could previously have been worn as another smaller jewel White metal: tested by the jewellery department to be platinum (pin 14K gold) Total gross weight approx. 29.3g