Sancy after a devastating defeat, James took shelter under Louis XIV of France, a fickle host who tired of his exiled guest. Facing destitution, James had no choice but to sell the Sancy to Cardinal Mazarin in 1657 for the reported sum of £25,000. The cardinal bequeathed the diamond to the king upon his death in 1661. The Sancy was thus domiciled in France but disappeared during the French Revolution when brigands raided the Garde Meuble (Royal Treasury). As well as the Sancy, other treasures stolen were the Regent diamond, and the French Blue diamond which is known today as the
Beau-Séjour Palace Pinheiro—by his heirs. In the 1930s, following the death of D. Maria da Glória Leite, "Beau-Séjour" passed into the hands of her goddaughter and her husband (Augusto Fernandes de Almeida). Ultimately, most of the contents were sold at auction, along with the estate, which came into the possession of the Marist Brothers, who established a college in the "palácio". This was a short-lived venture, after which the municipal council of Lisbon eventually acquired the estate in the 1980s. There were alterations to the interior of the house, conforming to the change in the function of the building: there was a