with central ground of calibre cut sapphires, to a pierced and shaped brilliant cut diamond set line border, baguettes and square cut diamonds below and to top, mounted in platinum, signed 'Cartier London', serial number 5503Length 3.8cm / 1 7/16''
Width 1.6cm / 5/8''Weight: 8.5g
19th century large golden topaz and diamond cluster brooch, c.1850, the oval facetted topaz of approximately 34ct, secured by a diamond collet set gold mounted openwork foliate scroll border, all raised within a diamond cut down collet frame, the diamonds all of cushion, old brilliant, double-eight and rose cut, larger diamonds to the outer frame, mounted in silver and gold, total diamond weight approximately 5.10cts