Platinum, sapphire and diamond pendant necklace, circa 1920, modelled as an architectural motif, pierced out to the obverse, reverse and sides, centring a line of five collet-set multi-shape sapphires, alternating between lozenge-shaped plaques decorated with circular-cut diamonds, completed by a link and fetter chain, the sapphires and diamonds together weighing approximately 2.90 carats and 0.18 carat respectively, circumference approximately 370 mm, pendant length approximately 75 mm.