Iolite, also known as "water sapphire" or "Viking's Compass," is a gemstone with a rich history and diverse cultural significance. Its name derives from the Greek word "ios," meaning violet, due to its predominant colour range that spans from blue-violet to blue-gray.

Historically, Iolite was used as a navigation aid by Viking seafarers, who relied on its pleochroic property to determine the direction of the sun even on cloudy days. This earned it the nickname "Viking's Compass" or "sunstone.

Today, in India and Sri Lanka, Iolite is often associated with spiritual practices, believed to enhance intuition and promote spiritual growth. 

Spiritually, Iolite is believed to stimulate the third eye chakra, enhancing intuition, and aiding in self-discovery and inner reflection. It is also associated with promoting clarity of thought and enhancing creativity.

It is believed to promote mental clarity and enhance creativity, qualities that can foster imaginative thinking. By clearing mental fog and promoting clear thought processes, Iolite can create a conducive environment for imaginative exploration and innovative thinking.

Iolite has been found in various locations worldwide, including India, Sri Lanka, Madagascar, Tanzania, Brazil, and the United States.