Pale Ore

Uses
Pale Ore is a collectable item found in several places throughout Hallownest. Giving the Nailsmith Pale Ore along with a payment of Geo allows him to upgrade the Knight's Nail. The first upgrade requires no Pale Ore, the second requires one, the third requires two, and the final upgrade requires three Pale Ore, for a total of six.

How to Acquire
There are six pieces of Pale Ore to be found in total:

Trivia

 * Pale Ore has some connection to Pale Beings; the two seen in the game being the Pale King and the White Lady.