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Iolite
According to legend, Vikings used iolite slices to reduce glare when checking the sun’s position.
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Iolite Description
This silicate of aluminum, iron, and magnesium has two distinctive features—a beautiful, violetish blue through slightly violetish blue hue derived from iron and a striking, eye-visible pleochroism.
Iolite History and Lore
Iolite has a long history of use as an adornment and possibly as a navigation tool.
Iolite Care and Cleaning
Learn about iolite's durability and how to care for your iolite jewelry.
Iolite from the Thor-Odin Dome, British Columbia, Canada: Geology, Chemical Composition, Inclusions, and Cause of Chatoyancy
Reports on the geological setting and gemological properties of violet-blue gem cordierite from new deposits located in British Columbia.
A Prospectors’ Guide Map to the Gem Deposits of Sri Lanka
Sri Lanka is world famous for its gem wealth, but the actual extent of the deposits has never been determined.
Sri Lanka: The Gem Island
An overview of the many types of gem-quality material, and its inclusions, currently found in Sri Lanka.
