Marquise, square and old-cut diamonds, platinum, circa 1920, numbered

‌Diamonds: 1 marquise weighing approximately 0.50 - 0.80 carat, 4 square with approximate total weight of 0.40 - 0.60 carat, approximately 148 old-cut for a total approximate weight of 2.50 - 2.80 carats. Total approximate weight of brooch 3.40 - 4.20 carats
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‌Size/Dimensions: 5.5 x 1.0 cm (2¹⁄₄ x ³⁄₈ in)
‌Gross Weight: 8.9 grams

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Lot Essay

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.