On a dark night in September of 1792, someone made off with the 69 carat French Blue diamond. Confiscated from King Louis XVI by the revolutionaries of the French National Assembly, the gem, along with the rest of the French Crown Jewels, had been secreted in a royal storehouse for safe keeping. Many of the gems stolen that night were subsequently recovered by the French government. The French Blue was never seen or heard of again.

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