Mining

Mining is another boring gathering skill, but at least very profitable, with +25% Mining jewel, without any doubt this is the most profitable skill in whole game. There is 30 types of Ores/Ingots to find, from Iron to Titan. You can also mine by using a Shovel on swamp (to get clay), or on desert (to get sand), you have to smelt sand into glass before you can use it, (requires at least 40% Tinkering). Mining skill is handly also with digging a chest by Treasure Hunter, every 10% of mining let you mine 1 tile far away from the chest.

Check also:
 * Blacksmithy
 * Tinkering
 * Treasure Hunter