The ring has the two teardrop shaped jewels facing in opposite directions.
The blue sapphire and diamond each have a carat-weight a little less than one carat.
Osenat’s website said that the ring is estimated to sell in the range of $13,000 to $20,000. When Napoleon met Josephine in September 1795, she was a 32-year-old widow with two kids.
The couple got married on March 9, 1796, just before he left to take over the French Army in Italy and divorced in 1810.