Finder's metal is a metal that is used commonly on ships for its unique property of being seemingly "pulled" northward. Any irregular chunk of the metal, when placed upon a surface that it could freely spin, will always have its heaviest part spin to face North. Discovered nearly 600 years prior, almost all modern ship crews are trained to navigate the seas using the material, and older methods of following star patterns have generally been lost.
The metal looks like chunks of silver, except that it gives of a sort of greenish glow at all times. It is rather weak, and is therefore not commonly used in weapons and armor. The material is rather rare and is generally found in mountain caves, as the glow can be seen when there are no lights shining in the darkness. The veins are rather small, but this is fine for the purposes of small navigational equipment.
The Metal itself is not magnetic, making it far superior to magnets to use for navigation. No force seems to interrupt the weak force of the Northward pull.