An Art Deco diamond and black onyx platinum brooch by Cartier

£8,000 - £12,000 £10,500

An Art Deco diamond and black onyx platinum brooch by Cartier, centred with an old circular cut diamond and with pierced diamond set zigzag pattern to the rectangular panel. Within diamond set borders and with black onyx highlights. 4.4cm wide. With inventory mark 1637.

Unsigned but with supporting documentation.