Iolite 5x8mm Rondelle Faceted - 15-16 Inch White Howlite and an Amazonite ring was

and an Amazonite ring was found among the treasures in King Tutankhamun’s tomb

As the name suggests

It sometimes features dark brown to black dendritic inclusions that branch like tiny tree limbs through the stone

and pure ferrosilite contains no magnesium

Opal is a natural gemstone made from silica mineral and 90% are found in Australia

Iolite 5x8mm Rondelle Faceted - 15-16 Inch White Howlite and an Amazonite ring wasIolite 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.