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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Napoleon Diamond Necklace ： ウィキペディア英語版 Napoleon Diamond Necklace The Napoleon Diamond Necklace is a diamond necklace commissioned by Napoleon I of France c. 1811–1812. It is currently on display in the Smithsonian Institution in Washington, D.C., United States. ==Description== The Napoleon Diamond Necklace consists of 28 mine cut diamonds set into a single thread, with a fringe of alternating pendeloque and briolettes diamond cuts. The five pear-shaped pendoloques are each mounted below a small brilliant cut diamond. The four ovaline pendeloques are mounted above designs which incorporate 23 brilliant cut diamonds each. Each briolette mounting is set with 12 rose cut diamonds.〔Gaillou, Eloïse; Post, Jeffrey; "An Examination of the Napoleon Diamond Necklace", ''Gems and Gemology'' (Winter 2007), p. 353.〕 While the gems of the Napoleon Diamond Necklace have never been professionally graded by a lapidary (as they have never been removed from their mountings), infrared spectroscopic analysis of the diamonds has shown that they are primarily Type Ia. However, 13 of the 52 largest diamonds in the necklace are of the rare Type IIa variety.〔Gaillou, Eloïse; Post, Jeffrey; "An Examination of the Napoleon Diamond Necklace", ''Gems and Gemology'' (Winter 2007), p. 355.〕 A number of the Type Ia diamonds show indications of sulfide crystal imperfections.〔"(Recent Research on the Napoléon Diamond Necklace )", National Museum of Natural History. Retrieved October 19, 2008.〕 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「Napoleon Diamond Necklace」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.