Bulgari diamond and gemset 'Allegra' necklace, Vari-cut gemstones including blue topaz, peridot, citrine and pink tourmaline, accented by round brilliant-cut diamonds, estimated total diamond weight 1.50 carats, 18ct white gold, signed Bulgari, Italian registry mark, made in Italy, 750, weight 27gm, length pendant 5.2 cm, necklace 45.5 cm.