A graduated pearl and diamond necklace

A graduated pearl and diamond necklace, the millegrain set diamond pierced oval links are separated with thirteen graduted pearls, platinum and white gold. 40cm long. With Gem and Pearl Laboratory report number 4198 stating that the largest pearl measures 10.2 to 11.8mm and the smallest pearl is 6.4 to 6.8mm, all natural pearls, fourth from tongue end is freshwater, the remainder all saltwater.