19th century large golden topaz and diamond cluster brooch, c.1850,

19th century large golden topaz and diamond cluster brooch, c.1850,
Price: £20,000-£50,000
Ref No. 06541
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Description
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
Length 4.5cm / 1�''
Width 3.2cm / 1�''
Topaz approximately 27.0 x 18.0 x 9.9mm
Weight: 20g
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S.J. Phillips