Let them eat their hearts out. Jewels that once belonged to Marie Antoinette, the extravagant and doomed last queen of France, are set to hit the auction block as part of what Sotheby's calls "one of the most important royal jewellery collections ever to appear on the market." Sold by Italy's royal House of Bourbon-Parma, the items up for grabs Thursday in Geneva, Switzerland—smuggled to Antoinette's family in Austria before she and Louis XVI met the guillotine in 1793—haven't been seen in public for 200 years, reports the BBC. They include a pearl and diamond pendant, valued at up to $2 million, and a monogram ring with a lock of Antoinette's hair, expected to fetch up to $50,000, per CNN. (Antoinette's silk shoes were previously sold.)