Craft of Exile is a crafting simulator for Path of Exile designed to compute the probabilities of obtaining specific results through different methods.
This is just applied as an extrapolation that it should work the same as fossils so the emulator makes it so mods of the matching tag get a 10x multiplier. It could very well be less or more than that but intensive (and incredibly inconvenient and impractical) in-game testing would need ...