An art deco sapphire and diamond clip, by J.E. Caldwell, circa 1930. Photo Bonhams.

The geometric plaque of pierced design, set throughout with cabochon sapphires and old brilliant, square and baguette-cut diamonds, diamonds approximately 9.00 carats total, signed JEC & Co., numbered, width 4.7cm. Estimate HK$ 90,000 - 120,000 (€8,400 - 11,000)

Bonhams. FINE JEWELLERY AND JADEITE. Hong Kong, Admiralty, 21 May 2014 - http://www.bonhams.com/