Ice Obsidian 10x20mm Double Drill - 8-Inch faceted-shapes its brilliant color comes from

its brilliant color comes from the presence of very small inclusions of Nickel compounds

Shattuckite is a rare copper silicate hydroxide mineral

Fire Opal and Black Opal with spectacular play of color are now being found in these areas

The word "beryl" is derived from the Greek beryllos

Ice Obsidian 10x20mm Double Drill - 8-Inch faceted-shapes its brilliant color comes fromIce Obsidian is a light brown to green to gray volcanic stone. Obsidian is formed when felsic lava cools without crystal growth. It is sometimes used for scalpel blades in cardiac surgery, as Obsidian can be formed into a blade many times sharper than steel surgical blades.