Iolite 7x8mm Faceted Round Nugget - 15-16 Inch R0717 they appear dark or black

they appear dark or black

Later determined to be an iron meteorite

Stichtite is a mineral

Naturally occuring in hues of blue-green to green with spots and streaks of red

Iolite 7x8mm Faceted Round Nugget - 15-16 Inch R0717 they appear dark or blackIolite 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.