Iolite 6mm Energy Prism - 15-16 Inch R1754 as well as gray and

as well as gray and white inclusions in marbled patterns

Lapis is highly regarded for its beautiful blue color flecked with gold inclusions of pyrite

manganese and other metallic oxides captured during the forming of the rock

fluorannite

Many stones in the Russian crown jewels from the 17th century which were thought to be rubies are actually red Tourmaline

Iolite 6mm Energy Prism - 15-16 Inch R1754 as well as gray andIolite 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.