Iolite 7x8mm Faceted Round Nugget - 15-16 Inch New Septemeber 2022 and chatoyancy

and chatoyancy

The charm measures 6mm not including the loop

These inclusions are chromite

Wesley a former chief chemist with the Mount Lyell Mining and Railway Company

consisting of opaque rust to red glass with tiny flecks of glittering copper suspended within it

Iolite 7x8mm Faceted Round Nugget - 15-16 Inch New Septemeber 2022 and chatoyancyIolite 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.