3741475 The Maria Fitzherbert Jewel (w/c on ivory in diamond-studded locket) by British School, (19th century); height: 3.7 cm; Private Collection; (add.info.: A diamond-glazed locket containing a portrait of King George IV when Prince of Wales (1762-1830). The portrait miniature, on ivory, by Richard Cosway (1742-1821), the locket almost certainly supplied by Rundell, Bridge & Rundell, London, c.1800. Oval, 37 mm high, including suspension loop, the locket\'s cover centred with a portrait diamond measuring 17 x 15 x 0.9 mm and surrounded by 18 rose-cut diamonds, diamond-set suspension loop, gold push-pin to release a spring mechanism.); Photo by Christie\'s Images.