$721 at Blue Nile (Save $309) From delicate pendants to intricate diamond-studded chains, Blue Nile necklaces are designed to be eye-catching and treasured. A diamond necklace from Blue Nile is ...

A diamond-studded necklace thought to be involved in a scandal that led to the eventual downfall of the last queen of France, Marie Antoinette, is being sold in Geneva next week.