An Old-cut Diamond Stick-pin

An old-cut diamond stick-pin, the old cushion-cut diamond weighing 3.81 carats, claw set in yellow gold mount, hallmarked 18ct gold, London, bearing the Bentley & Skinner sponsor mark, the diamond measuring approximately 1 x 0.9cm, the pin measuring 6.2cm long, gross weight 3.7 grams. SHRV