Gold
Gold is the internal temporal pulling metal. An Allomancer burning gold is able to see who they could have been in the past, had they made different choices. Feruchemists can use gold to store health, and when used as a Hemalurgic spike, cadmium steals temporal Feruchemy.
Allomantic Use
A gold Misting is known as a Augur. Due to the emotional stress associated with seeing one's alternate past, gold is not a very useful metal. Furthermore, touching the gold shadow while burning gold causes unpleasant side effects.
Feruchemical use
Gold, when used by a Feruchemist, allows the storage of health. This is very useful, as tapping a goldmind allows a Feruchemist to survive wounds that he otherwise may not. It is hard to fill a goldmind, due to the fact that it requires the Feruchemist to spend time sickly and weak.
Hemalurgic Use
When used as a Hemalurgic spike, gold steals temporal Feruchemical powers.