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The Briolette of India is a colorless diamond (weighing ) that was found in India. It is cut in a briolette shape, and is a D-coloured (colourless) type IIa diamond.〔 Its history was thought to date from the 12th century, when it was first acquired by Eleanor of Aquitaine, the Queen consort of King Louis VII of France between 1137 and 1152. This makes the Briolette of India the oldest diamond on record in the world, even older than the famous Koh-i-Noor.〔 The diamond was in the possession of several famous historical figures such as King Richard the Lion Heart, who carried it with him to the third crusade, and King Henry II of France who presented it to his mistress Diane de Poitiers.〔(【引用サイトリンク】title=Diamond Facts )〕 The Briolette of India has disappeared from records for long periods, sometimes even for several centuries, before resurfacing again. It is currently believed to be in the possession of a European family.〔(【引用サイトリンク】title=Briolette of India Diamond )〕 ==Early history== Modern reports of the diamond's history speculate that it dates back as far as the 12th century, when it is said to have first been acquired and brought to England by Eleanor of Aquitaine, the queen consort of King Louis VII of France.〔(【引用サイトリンク】title=The Briolette of India ) 〕〔(【引用サイトリンク】title=History Timeline of Diamonds )〕 If Eleanor of Acquitaine did come into possession of the diamond, it was probably between 1137 and 1152, which would make the Briolette of India the oldest diamond on record.〔〔 After her marriage to the King of France was dissolved, Eleanor married Henry II of England, to whom she bore eight children including Richard I of England (Richard the Lionheart) who is said to have later acquired the diamond. Modern sources speculate that King Richard I carried the Briolette of India with him when he took part in the third crusade.〔 The diamond's history was not recorded for almost three centuries after it passed from Richard I's possession. Modern sources resume the story of the diamond from the late 16th century, when Henry II of France is said to have presented it to his mistress, Diane de Poitiers.〔 After Henry II's death, his queen consort, Catherine de Medicis, forced Poitiers to surrender the diamond as well as other jewels given her by the monarch. The jewels that were surrendered may have included the Briolette of India.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Briolette of India」の詳細全文を読む スポンサード リンク
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