Iolite 7x8mm Faceted Round Nugget - 15-16 Inch Agatized Coral characterized by its color range

characterized by its color range of black

It often also occurs with colors of rust

if desired

Porcelain Jasper is a brecciated (broken) Jasper originally found on a gold claim high in the Sierra Madre mountains of Mexico

It is opaque

Iolite 7x8mm Faceted Round Nugget - 15-16 Inch Agatized Coral characterized by its color rangeIolite 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.