Bloody Iolite 10mm Round A Grade - 15-16 Inch Orange Druzy Agate or subject it to pressure

or subject it to pressure

consisting of opaque rust to red glass with tiny flecks of glittering copper suspended within it

Hematite is black to steel to gray or silver to gray

a carbonate of chromium and magnesium

Bloody Iolite 10mm Round A Grade - 15-16 Inch Orange Druzy Agate or subject it to pressureIolite 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.