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Louis XVI wore a fabulous stone – that was called "the Blue Diamond of the Crown" – which disappeared in 1792. 路易十六世曾佩戴过一颗名为“王冠蓝钻”的稀世宝石。1792年，这颗宝石便下落不明。
Louis XVI wore a fabulous stone – that was called "the Blue Diamond of the Crown" – which disappeared in 1792. 路易十六世曾佩戴过一颗名为“王冠蓝钻”的稀世宝石。1792年，这颗宝石便下落不明。 