Iolite with Flash 10mm Round - 15-16 Inch - CLEARANCE Lepidolite Mix meaning that it has lustre

meaning that it has lustre and some translucency without the fire or color play associated with precious opal varieties

Weight: grams: 85-105 grams

At that time yellowish gems were called "topaz" in many parts of the world

and the material has not been treated with dye

a turquoise trader and an electrical engineer

Iolite with Flash 10mm Round - 15-16 Inch - CLEARANCE Lepidolite Mix meaning that it has lustreIolite 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.