Lot 315. An Art Deco hardstone and diamond clock, by Lacloche Frères. Estimate GBP 15,000 - GBP 25,000 (USD 22,800 - USD 38,000). Price realised GBP 50,000 (USD 76,650) © Christie's Images Ltd 2015

The rectangular amber case with inset carved lapis lazuli dial, rose-cut diamond Arabic numerals and similarly-set arrow hands, flanked to either side by a fluted aventurine quartz, lapis lazuli and rose-cut diamond column, with similarly composed stepped surmount, raised on spherical aventurine quartz feet and further amber and lapis lazuli plinth base, circa 1920, French marks for platinum and gold, 10.7 x 7.6cm, original fitted maker's case. Signed Lacloche Frères Paris, no.71714

Christie's. Important Jewels, 3 June 2015, London, King Street