Ice Obsidian 13x18mm Rectangle - 8-Inch 48hr_12172024 formed from wood that has

formed from wood that has decayed under extreme pressure

giving some rubies a slightly brownish or purplish tint

Tourmalated Quartz is clear Quartz that has formed with Black Tourmaline

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

olive green and gray to green

Ice Obsidian 13x18mm Rectangle - 8-Inch 48hr_12172024 formed from wood that hasIce 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.