This 5.64ct Navette Iolite is absolutely stunning. Known as the Navigators Stone. Mariners would use Iolite to locate the sun on overcast days due to the gemstones trichroic nature. Ian Andrew Brown designed the “Submariner” specifically for the size, color and shape of the rough Iolite. It is quite an honor to have one of Ian’s designs named for my time served in the U.S. Navy.