Octagonal pyramidal cabochon sapphires, rose-cut diamonds, platinum (French mark), circa 1925, signed Cartier Paris, numbered

AGL, 2022, report no. 1124592 A and B: Australia, no gemological evidence of heat, clarity enhancement: none

Sapphires: 4 octagonal pyramidal cabochon ranging from approximately 5.50 to 4.00 carats and weighing a total of approximately 18.00 - 20.00 carats

Size/Dimensions: each cufflink head ranging from 1.2 x 1.0 to 1.2 x 0.8 cm (¹⁄₂ x ³⁄₈ to ¹⁄₂ x ¹⁄₄ in)
Gross Weight: 12.6 grams

This lot is offered without reserve.

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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.