Many of the best items in the early levels of the game can only be obtained by crafting them out of materials dropped throughout the game. Combining the low level materials through transmutation allows you to build the higher level materials. It takes three of any given material to manufacture the next highest level.
The Spiritstone set requires a level 70 character to craft.
In v 1.7 this level requirements seems no longer to exist.
|Image||Level||Name||Amount per complete set (in BI)||First posible drop location|
|1||Black Iron||90 Black Iron||Castle Valance|
|2||Dragolith||270 Black Iron||Goblin Tunnels|
|3||Ancient Crystal||810 Black Iron||Clockwork Dungeon|
|4||Voidstone||2,430 Black Iron||
|5||Spiritstone||7,290 Black Iron|