This is a mod based off of the diamond crafting from Industrial Craft 2. you put some coal or charcoal in a stone cutter and turn it into coal dust.. you take 8 coal dust and a flint and make a coal ball. you "compress" that in a (blast) furnace which takes twice as long as a normal item. craft 8 compressed coal balls with a brick, iron, or obsidian block and make a coal chunk. compress that and you get a diamond.
