of pierced and openwork design centred by a marquise shaped stone, collet and claw set throughout with old cut cushion and round brilliants, baguette and square cut diamonds, mounted in platinum and with 18ct white gold fittings, approximately 20cts of diamonds Length 7.8cm / 3 1/8''
Width 3.2cm / 1�'' Weight: 37g
Art Deco sapphire and diamond bow brooch by Mauboussin, Paris, the openwork centre of buckle design featuring an oblong cushion cut sapphire of approximately 1.25ct,
Late 19th century / early 20th century 'Noeud Louis XVI' diamond openwork ribbon bow brooch by Cartier, Paris c.1902, the loops and ribbon ends centred by alternating single stone and quatrefoil clusters,