Elemental Stones
The Elemental Stones are five items with unique magical properties aligned with their elemental energy. While they are involved in several quests and achievements, their properties can also be quite useful in their own right. Some of the Stones can be found on Item Pedestals or in Chests, and all of them can also be created from Essences.
Kiuaskivi (Fire)
The Kiuaskivi (listen 
) (previously known as Brimstone) is a common inventory item.
It has a 4.4% chance to spawn in Item Pedestals, a 7.7% chance to spawn in Pedestals in the Ancient Laboratory, and a 0.75% chance to spawn from Chests.
Ukkoskivi (Electricity)
The Ukkoskivi (listen ) (previously known as Thunderstone) is a common inventory item which radiates electricity.
It has a 2.2% chance to spawn in Item Pedestals, a 7.7% chance to spawn in Pedestals in the Ancient Laboratory, and a 0.75% chance to spawn from Chests
Tannerkivi (Earth)
The Tannerkivi (listen ) (previously known as Earth Stone) is a rare inventory item.
The only way to obtain it is by sacrificing an Essence of Earth through an Essence Eater.
Vuoksikivi (Water)
The Vuoksikivi (listen ) (previously known as Water Stone) is an exceedingly rare item.
While it has an approximate 4.83% chance to be dropped from a Great Treasure Chest, the easiest and most consistent way of obtaining it is by sacrificing an Essence of Water through an Essence Eater.
Kakkakikkare ('Spirit')
The Kakkakikkare (listen ) (lit. poop, also colloquially known as Poop Stone) is an exceedingly rare item which transforms liquids into Excrement and causes vomiting.
While it has an approximate 0.11% chance to be dropped from a Great Treasure Chest, the easiest and most consistent way of obtaining it is by sacrificing an Essence of Spirits through an Essence Eater.