Lumina

 is an NPC in the Dwarven Mines that sells Torches, Lanterns, and InfiniTorch™s. The name "Lumina" is probably a reference to the fact that she sells items that can illuminate your Private Island or the Crystal Hollows.

Dialogue

 * We've got torches, lanterns. Pretty much anything to suit your needs.

After purchasing an item

 * Good doin' business with ya.