Iolite (Water Sapphire) Ring, Butterfly, 925 Sterling SilverLovely faceted Teardrops of Iolite, bezel set on a Sterling Silver Butterfly. This stone does look like the much more expensive sapphire, hence the popular name of Water Sapphire, but it's actually a different stone altogether called Cordierite Iolite is pleochroic, meaning it's colour can change from grey blue to Violet according to the direction you view it. It's also been called the 'Viking Compass' because it's said that those ancient seafarers