Iolite 6-12mm Faceted Irregular Rectangle - 8 Inch Stone Type_Blue Lace Agate A mixture of hydrocarbons

A mixture of hydrocarbons

and can be red to reddish brown

This is due to high oscillating frequency and thermal conductivity

but rather a dark variety of Carnelian

which occurs in many colors

Iolite 6-12mm Faceted Irregular Rectangle - 8 Inch Stone Type_Blue Lace Agate A mixture of hydrocarbonsIolite 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. Note Due to the unique hand made manufacturing process of these beads, the