Reshape Arcanite

You can use Gemcutting Lore to reshape a piece of Arcanite. Make a Gemcutting Lore check against a DC equal to 10 plus 5 per Tier of the Arcanite (i.e. the Tier of the crystal itself, not the Powers it grants):

Once you Critically Fail, Succeed, or Critically Succeed at an attempt to Reshape a piece of Arcanite, it cannot be Reshaped again without destroying it.