Diamond necklace, Padani, designed as a line of x shaped plaques flanked by openwork heart motifs between half hoop links pave set to the front with brilliant-cut diamonds together weighing approximately 2.16 carats, mounted in 18ct two-tone gold, weight approximately 107.50 grams, length approximately 420 mm, Italian assay marks, maker's mark indistinct. $8,000-10,000