Few royal women have inspired more myth, legend, and furor than Marie Antoinette, the French queen whose life ended on a guillotine in the midst of revolution. The extravagance of her life, and the notoriety of her death, have made objects associated with her into something like relics. In particular, jewels connected with the tragic queen are incredibly sought after. Perhaps it’s a surprise, then, that this British aristocratic ruby and diamond necklace—which is also set with Marie Antoinette’s pearls—didn’t make it off the auction block.