The Earth is your starting point. In fact, you won't notice you need a word for this world until you reach the moon.
The Earth is 1000 km deep and has many milestones.
The Earth has the following minerals and isotopes:
- Minerals: Coal, Copper, Silver, Gold, Platinum, Diamond, Coltan, Painite, Black Opal, Red Diamond, Blue Obsidian and Californium
- Isotopes: Uranium, Plutonium and Polonium, three of each