Iolite 5x8mm Rondelle Faceted - 15-16 Inch White Howlite It sometimes features dark brown

It sometimes features dark brown to black dendritic inclusions that branch like tiny tree limbs through the stone

It is found in the Bilk Mountain range near Denio

As a Serpenti

and pure ferrosilite contains no magnesium

Onyx has been both revered and feared throughout history

Iolite 5x8mm Rondelle Faceted - 15-16 Inch White Howlite It sometimes features dark brownIolite 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.