Iolite, also known as Cordierite, Water Sapphire and Viking Compass, is a magnesium iron aluminium cyclosilicate. This stone typically occurs in contact or regional metamorphism of pelitic rock and particularly common in hornfels produced by contact metamorphism of pelitic rocks. Vikings once utilized this stone’s strong pleochroism to determine the direction of the sun on overcast days.
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Iolite, also known as Cordierite, Water Sapphire and Viking Compass, is a magnesium iron aluminium cyclosilicate. This stone typically occurs in contact or regional metamorphism of pelitic rock and particularly common in hornfels produced by contact metamorphism of pelitic rocks. Vikings once utilized this stone’s strong pleochroism to determine the direction of the sun on overcast days.
| length | 7.25in |
|---|---|
| width | 2.5in |
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