Iolite 4mm Microfaceted Round A Grade - 15-16 Inch Viking’s Compass Distinctive for its purple-and-gray tones

Distinctive for its purple-and-gray tones

where it gets its name

It is a form of Chrysoberyl

Blue Apatite ranges in color from light teal-blue to bright blue to dark blue-green

The name "biotite" is used because these minerals generally cannot be distinguished without optical

Iolite 4mm Microfaceted Round A Grade - 15-16 Inch Viking’s Compass Distinctive for its purple-and-gray tonesIolite 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.