Iolite 4mm Microfaceted Round A Grade - 15-16 Inch Cantera Opal Tourmalated Quartz is clear Quartz

Tourmalated Quartz is clear Quartz that has formed with Black Tourmaline

This topaz is found in the cavities of a pegmatite

the third to hardest common natural gemstone

Crazy Lace Agate is a banded Chalcedony that naturally occurs as golden brown with layers of pink

Once cooled

Iolite 4mm Microfaceted Round A Grade - 15-16 Inch Cantera Opal Tourmalated Quartz is clear QuartzIolite 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.