Board Thread:Questions and Answers/@comment-76.251.32.112-20130621011050/@comment-5627887-20130621133029

You might not want to, but for max efficiency put your Nether Ores through an Induction Smelter, then use Factorization's Grinder and smelt the resulting Dirty Ore Gravel in a Slag Furnace and you will be rolling in materials.

Note that for Nether Redstone, Nikolite and Lapis Ore, it is best to just Macerate them, as this produces the most materials.

Nether Ruby,Sapphire and Green Sapphire Ores, you can Induction Smelt them, then place them down and mine them again to get the actual gems out of them.