Sancy Astor family possessed it for 72 years until the 4th Viscount Astor sold it to the Louvre for $1 million in 1978. The Sancy now rests in the Apollo Gallery, sharing attention with the likes of the Regent and the Hortensia. Sancy The Sancy, a pale yellow diamond of , was once reputed to have belonged to the Mughals of antiquity, but is more likely of Indian origin owing to its cut, which is unusual by Western standards. The shield-shaped stone comprises two back-to-back crowns (the typical upper half of a stone) but lacks any semblance to a pavilion (the
Auction catalog 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, and make up an important part of the libraries of