Old-cut diamonds, platinum, circa 1925

Diamonds: 1 largest old-cut measuring approximately 10.45 x 10.35 x 6.00 mm with approximate weight of 4.25 - 4.75 carats, remaining approximately 410 old-cut with approximate total weight of 23.00 - 25.00 carats. Total weight of the diamonds approximately 27.00 - 30.00 carats

Size/Dimensions: 16.2 x 2.5 cm (6³⁄₈ x 1 in)
Gross Weight: 64.5 grams

May Bourne Strassburger (1883 – 1959)
Christie's, New York, 18 August 2022, Sale 20956, Lot 39

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May Bourne Strassburger (1883 – 1959) was the eldest daughter of Frederick G. Bourne, the fifth president of the Singer Manufacturing Company. She married Ralph Beaver Strassburger, one of the founders of the Pennsylvania German Society in 1911. Together the Strassburgers traveled between their farm in Gwynedd Valley, Pennsylvania and their homes in Paris, Deauville and Chantilly, France as well as Palm Beach, Florida. They were known as avid antique collectors and breeders of thoroughbred racehorses.