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It displays a visual property called “pleochroism
5 Inches / 20x40mm / 2x3
The deposits within the rock become Turquoise after a chemical reaction occurs over long periods of time
followed by a mild heat treatment gives it the bright yellow color
or man-made) have variations in colors and patterns
Iolite 6mm Round A Grade - 15-16 Inch Apple It displays a visual propertyIolite most commonly occurs in shades of blue to gray, violet or indigo. It displays a visual property called pleochroism, which means that it can appear to be different colors as it shifts in the light. According to Norse legend, Viking explorers used thin pieces of Iolite as the worlds first polarizing lens to help them determine the exact location of the sun for navigation.
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