Iolite 4mm Microfaceted Round A Grade - 15-16 Inch Viking’s Compass The presence of Manganese in

The presence of Manganese in the stone produces its color

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

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

remote parts of the globe

Historically Opal was renowned as the “Queen of Gems” for its desirability and beauty

Iolite 4mm Microfaceted Round A Grade - 15-16 Inch Viking’s Compass The presence of Manganese inIolite 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.