Necklace Collection : A natural pearl and diamond necklace, circa 1880 275,000 — 460,000 CHF 294,333… 20 May 2018 3198 Necklace Collection : A natural pearl and diamond necklace, circa 1880 275,000 — 460,000 CHF 294,333 – 492,338USD LOT SOLD. 1,142,500 CHF (1,222,818 USD)