Color It comes in various colors, including blue, gray, brown, and green. Iolite is the most popular and valuable variety. Origin Brazil, India, Sri Lanka, and the United States Healing It is believed that cordierite, especially in its blue iolite form, enhances intuition and inner wisdom, stimulating the third eye chakra and facilitating spiritual insight. Interesting Facts Vikings used thin slices of iolite as a navigational tool to determine the direction of the sun on cloudy days, which is why iolite is sometimes called the "Viking's Compass."