William McGregor Paxton (1869-1941), The String of Pearls. Oil on canvas, 1908. Private collection

Rooryck, Taillefer & Co, House of Pearls, Jewelry, Goldsmithery. Gelatin silver bromide photograph,  Paris, September 10, 1909

© Paris, BHVP/ Roger-Viollet

Advertising poster for the Maison Boucheron, Paris, 26 place Vendôme, 1900

© Archives Boucheron.