A magnificent pair of diamond clip brooches, by Cartier, circa 1935. Photo Bonhams

Each central old pear-shaped diamond, weighing either 4.63 carats or 4.77 carats, within a baguette-cut diamond frame with square-cut diamond highlight, bordered by pear-shaped diamonds, each surmount composed of step, triangular and baguette-cut diamonds, remaining diamonds 43.45 carats total, each signed Cartier London, length of each clip 4.7cm (2) - Estimate: £80,000 - 100,000, $ 130,000 - 160,000

Bonhams. Fine Jewellery, 13 Apr 2011. New Bond Street