A GEM-SET 'ALLEGRA' NECKLACE, BY BULGARISet with a series of vari-cut gemstones, including peridot, pink tourmaline, citrine and blue topaz, accented by round brilliant-cut diamond links, on a cable-link chain with a circular cabochon citrine terminal, mounted in 18K gold, signed Bvlgari, Italian assay marks, pendant length 5.5cm, chain length 54.5cm (adjustable)