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while the amount of Iron in the stone varies its shade of purple
A variety of granite sealing products are available online or through home improvement stores
Opalite is known by several other names
This stone has not been dyed or enhanced in any way
Bloody Iolite 10mm Round A Grade - 15-16 Inch Flat while the amount of IronIolite 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.