This is an 18K rose gold engagement ring, from the world-renowned jeweler in Paris, France. It is a tiara-styled ring and is part of the Joséphine collection, named after the wife of Napoleon Bonaparte, as this was his preferred jeweler. The Chaumet Joséphine Tiara ring in rose gold features a double band of pavé diamonds, a single princess-cut diamond and - the jewel in the crown - a pear-cut rubellite.