A cultured pearl, sapphire and diamond necklace by Adler, composed of a uniform single row of cultured pearls spaced with diamond-set roundels, to a pavé brilliant-cut diamond panel with four collet-set diamond accents, suspended by hinged baguette-cut diamond shoulders and centred with a heart-shaped sapphire, signed ‘Adler’, gross length approximately 42cm. £2,400-£2,800