Iolite 8mm Round A Grade - 15-16 Inch Stone Type_Golden Tiger Eye followed by a mild heat

followed by a mild heat treatment gives it the bright yellow color

this unique Madagascar Agate rock specimen is perfect for gift giving or keep for yourself

This dye was said to create Michelangelo’s favorite shade of blue

the only site where it can be found

Red Agate is a form of Chalcedony

Iolite 8mm Round A Grade - 15-16 Inch Stone Type_Golden Tiger Eye followed by a mild heatIolite 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.