I wonder who has it now. It belongs in a museum imo.

The Romance Behind Napoleon’s $1 Million Ring Persists Today - Gem Gossip - Jewelry Blog
In March 2013, history repeated itself in an unusual way. The engagement ring that Napoleon had probably burned a hole in his wallet to buy his fiancée Josephine in 1796 sold for a whopping $949,000 at France's Osenat auction house. The ring in question is an eighteenth century jewel in gold...
gemgossip.com