Fire Obsidian is a bright fiery flash, which can sometimes contain other bright colors. It tends to run along a strand, and takes a lot of practice, patience, and skill to cut slabs and cabs of it. It is one that is recommended for lapidary veterans. Fire Obsidian gets the color and flash from magnetite, which are tiny microscopic metal flecks, that are embedded within the volcanic glass. Fire Obsidian is easily one of the most rare forms of obsidian known to exist. Since fire obsidian gets its color from magnetite, it does require bright light, with the stone turned the right direction, to get the color to light up. Under normal conditions, it will appear black.