Photo credit: Christie's Auction House
This impressive Single Strand natural pearl necklace is famous for being part of the Duchess of Windsor’s jewelry collection, however its legacy stretches back to the imperial Russian era. The Dowager Empress Maria Feodorovna of Russia sold the necklace to King George V in 1929, who gifted the natural pearl necklace to his wife, Queen Mary of England. From Queen Mary, the necklace went to the heir to the British Throne, Edward the Duke of Windsor who subsequently gave the fabulous pearl necklace to his fiancé Bessie Wallis-Simpson upon his marriage to her in 1937.
Designed and created by Cartier of Paris at the behest of Queen Mary, the spectacular single strand natural pearl necklace features 28 creamy-white natural pearls ranging from 9.2-16.8mm, possibly of Australian origin (making them natural South Sea pearls). It is a smaller choker length, measuring just 14-Inches including the clasp. The pearls are all symmetrically shaped but a variety of Round, Near-Round, Button and Drops. The diamond clasp features 2 Emerald-cut diamonds 2.00cttw approximately, along with 2 fancy cut Trapezoid diamonds to either side, also 2.00cttw approximately, framed by 20 round single-cut diamonds 0.70cttw approximately in an oval-shaped clasp forged by Cartier of Paris. An incredibly large drop-shaped natural pearl and diamond pendant and round diamond and pearl earrings, also designed by Cartier at the Duke of Windsor’s request for his beloved wife was also considered to be part of this suite.
Upon the Duchess of Windsor’s death in 1986, her entire collection of fine jewels acquired after a long, loving marriage was bequeathed to the French Research Institute, with instructions to liquidate the entire collection via auction with the proceeds going to medical research and charity. The last sale of the Duchess of Windsor’s famous necklace was in 2007, when it was purchased by Calvin Klein, as a gift for his wife.
5) Untitled 4-Strand Natural Black Saltwater Pearl Necklace – Auctioned for $5.1 Million in 2011

Photo credit: Christie's Auction House
Rare and exotic, this glamorous natural pearl necklace is composed entirely of naturally-colored black pearls featuring a Dark Charcoal Grey body color with sumptuous Overtones of Peacock, Green, Aubergine and Silver/Steel natural tahitian pearls. The provenance of this unique multi-strand natural black pearl necklace is difficult to track down (the Auction House, Christie’s New York, is staying mum!), but it most recently fetched a record-setting $5.1 Million in 2011.
The magnificent collection of pearls is composed of four lengthy strands of 63, 69, 76 and 81 wild pearls, graduating from 4.9-12.65mm. The Swiss Gemmological Institute examined the pearls, and issued an official gemology report certifying the wild origins of the pearls, and their natural un-enhanced colors.
6) The Cowdry Natural Black Pearl Necklace – Last Sold for $5.3 Million in October 2015