Iolite with Flash 10mm Round - 15-16 Inch - CLEARANCE quartz ” Most deep red Carnelian

” Most deep red Carnelian has been heat treated to darken the beautiful orange and red tints that are created by iron oxides in the stone

Hypersthene is often categorized as enstatite or ferrosilite

All species of garnets possess similar physical properties and crystal forms

Opalite is known by several other names

each specimen will vary in size and shape

Iolite with Flash 10mm Round - 15-16 Inch - CLEARANCE quartz ” Most deep red CarnelianIolite 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.