Bloody Iolite 10mm Round A Grade - 15-16 Inch Stone Type_Black Spinel 2x2 Inches / 30x50mm /

2x2 Inches / 30x50mm / 3x5cm

An iron oxide-hydroxide mineral

but will not be chemically treated or altered

Ocean Jasper is a commercial name for Orbicular Jasper

It won 1st price and has been used ever since in sculpture

Bloody Iolite 10mm Round A Grade - 15-16 Inch Stone Type_Black Spinel 2x2 Inches / 30x50mm /Iolite 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.