Iolite 6x8mm Handcut Faceted Irregular Chip Bead - 15-16 Inch Spinel Natural Agate is a variety

Natural Agate is a variety of banded Chalcedony

The most common members of the feldspar group are the plagioclase feldspars and the alkali feldspars

dark specks or veins

This item is treated and dyed agate

West African Jade is a complex Calcium Aluminum Silicate and is a Nephrite Jade

Iolite 6x8mm Handcut Faceted Irregular Chip Bead - 15-16 Inch Spinel Natural Agate is a varietyIolite 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.