Sancy robbery and murder was found. When the body was disinterred, the jewel was found in the faithful man's stomach. De Sancy later sold the diamond to James I (successor of Queen Elizabeth) about 1605 when it is thought the Sancy acquired its name. It was described in the Tower of London's 1605 Inventory of Jewels as "...one fayre dyamonde, cut in fawcetts, bought of Sauncy." James had it set into the Mirror of Great Britain. The Sancy was briefly possessed by the unfortunate Charles I (King of England, Scotland and Ireland) and then by his third son James II. Beleaguered
Chastreix-Sancy on and between the Puy de Chabane and Mont Redon, on the west side of the Puy de Sancy, which is part of an ancient stratovolcano which has been dormant for 220,000 years. It is within the Parc naturel régional des volcans d'Auvergne and the commune of Chastreix in the Puy-de-Dôme "département" of the Auvergne "région". It is about 40 km south west of the "préfecture" of the Puy-de-Dôme "département" Clermont-Ferrand, also capital of the Auvergne. The resort is sandwiched between the Cirque de la Fontaine Salée to the south-east and the Val d'Enfer, or Valley of Hell in English,