Chaumet - An important Art Deco ruby and diamond parure, Paris, circa 1930. Comprising: a pendant-necklace/bracelet combination, a bracelet, a pair of earrings and a brooch. Provenance: originally belonged to Maria Cristina of Habsburg-Lorraine (daughter of Archduke Charles Ferdinand of Austria and Archduchess Isabel of Austria-Este-Modena). Source: Sotheby&#x27;s Magnificent Jewels, St. Moritz, 22 February 1997.