French jeweller Pierre Cartier traded a $1 million pearl necklace and just $100 to buy a Fifth Avenue mansion in 1917 that became one of New York’s most famous luxury landmarks

French jeweller Pierre Cartier defeated some of New York’s most powerful real estate families by using a double-strand pearl necklace and only a $100 payment to secure a six-story Fifth Avenue mansion that is now worth hundreds of millions of dollars.

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