Iolite is the gem variety of the mineral cordierite. The name "iolite" comes from the Greek word for "violet." It has also been called "water-sapphire" as it resembles sapphire in color, but it is typically not as saturated in hue. The color of iolite is commonly referred to as "inky", a bluish-purple color, but also varies in color from blue to yellowish gray or brown. The gem is strongly pleochroic, appearing blue, bluish-gray, or grayish-yellow depending upon which direction the stone or crystal is viewed. It is commonly seen in jewelry today because it resembles tanzanite and sapphire, but it is much less expensive and not as rare. This 10.32-carat iolite is the first cordierite gem in the National Gem Collection from India.