The pale blue enamelled heart-shaped locket applied with old brilliant, single and rose-cut diamond-set thistles, roses and shamrocks around a star, opening to reveal a glazed compartment containing a hair scroll, suspended from a similarly-set diamond surmount, mounted in silver and gold, length 3.2cm, fitted case by Hunt & Roskell, Late Storr, Mortimer & Hunt, Jewellers & Goldmiths, to the Queen and Royal Family, 156 New Bond Street, London