An 18ct white gold and lapis lazuli bracelet watch by John Donald, 1971, the lapis lazuli dial of tonneau form, manual wind, without numerals, the integral bracelet composed of panels of striated and polished cubes, maker’s mark ‘JAD’, London hallmark, watch case numbered to the reverse ‘1288P’, maker’s case, length 17cm. £4,000-£5,000

For a description of the technique used in the above bracelet watch, see Donald’s autobiography Precious Statements: John Donald designer Jeweller, by John Donald & Russell Cassleton Elliott; published McNidder & Grace, 2015, page 58: “I textured the gold work by imitating the striations in the crystal (pyrite) and all these cubes were cut from square wire and individually soldered together”.