Art Deco petite nephrite and diamond clip brooch by Cartier, New York, the short arrowed form with a central channel of dome-buffed rectangular nephrite,
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,