Beau Sancy Its larger sibling diamond, the Grand Sancy, was sold to James I of England for his Queen, Henrietta Maria. The Beau Sancy was acquired by the Queen of France, Marie de Medicis. From Marie de Medicis, it passed to the Dutch King William, later William III of England, and his wife Queen Mary II. In 1701 it passed from the Dutch royal family to Frederick I of Prussia. Beau Sancy The Beau Sancy is a modified "pear double rose cut" diamond found in India that has been owned by a number of European royal houses. In May 2012, it was
Auction catalog allow users to look at past sales for getting estimates Auction catalog An auction catalog (US spelling) or auction catalogue (British spelling) is a catalogue that lists items to be sold at an auction. It is made available some time before the auction date. Auction catalogs for rare and expensive items, such as some art, books, jewelry, postage stamps, and antique furniture, are of interest in themselves: they will often include detailed descriptions of the items, their provenance, historical significance, photographs, and so forth. In some cases, auction catalogues are key documentation for rare objects that are in private collections,