Yellow gold, sapphire and diamond mesh necklace

18k yellow gold (750/1000) necklace with a central geometric motif set with a sapphire and 139 diamonds. One rectangular-cut sapphire with cut corners, weighing approximately 4 carats in total, is surrounded by 129 brilliant-cut diamonds, weighing approximately 4.09 carats in total (each diamond weighing approximately 0.04 carats), and 10 baguette-cut diamonds, weighing approximately 0.60 carats in total (each diamond weighing approximately 0.06 carats). Total diamond weight: 4.69 carats. Filed palm link. Length: 41.50 cm. Chain width: 0.60 cm. Length of the section including the motifs: 7.10 cm. Width: 2.30 cm. Total weight: 80.39 g. Sold with LFG certificate. Eagle's head hallmark. excellent condition