I have just made it to Troia in search of the earth crystal, but I have been told that a dark elf stole it and hid it away with him in a magnetically charged cave. Because of this, metal equipment will render me immobile while in the cave.
The problem is, I have no idea what's metal and what isn't. Is Mythril metal or some kind of stone? Is a "rod" made of metal? How can I tell what's made of metal?
If there's no in-game way to tell what's made of metal, then what is the best non-metal equipment I can use for this cave that is available at this point in the game?