Napoleon Bonaparte Diamond Necklace and Diadem. #napoleon #napoleonbonaparte #smithsonianmuseumofnaturalhistory #smithsonian #naturalhistory #minerals #museumofnaturalhistory #gem #gemstones #diamonds #diadem #tiara #crown #washingtondc #districtofcolumbia #washington #dc #jewelry #necklace (at Smithsonian’s National Museum of Natural History)