Art Deco sapphire, diamond and onyx oblong brooch, French c.1925, of open geometric design with pointed ends,

Art Deco sapphire, diamond and onyx oblong brooch, French c.1925, of open geometric design with pointed ends,
Price: £10,000-£20,000
Ref No. 05616
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Description
two channel set lines of sugarloaf cabochon sapphires with a triangular cluster at either end set with liens of diamonds an calibre onyx forming a 'key' pattern, the point terminals each set with a triangular cut diamond, mounted in platinum, French assaymark to pin, French workshop mark to pin
Length 6.2cm / 2 5/8''
Width 1.4cm / �''
Weight: 12g
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S.J. Phillips