What are Spirit Stones?
- Spirit stones are items that can be inserted into Weapons, Armours, Gloves and Shoes. When successfully inserted, it gives you a permanent bonus as long as you wear the item. You cannot add the same spirit stone in an item. The grade varies between +0 to a maximum of +4, increasing its bonus by every grade. Spirit stones cannot be upgraded. For gloves however, the term demon stones is more common. You can find all kind of stones in

Looking Glass and 
Trading Glass in Upgrades > Spirit Stones.
Usage
- The item you want to insert the spirit stone to needs at least one slot. Items until level 24 can have one spirit stone, from level 25 to 44 two and all items above level 45 three. But be careful, upon inserting a stone, it has a chance to break. If that's the case, you will see
Piece of Broken Stone. You can clean a broken stone by upgrading your item or using a 
Stone Handbook.
- As a general rule, spirit stones +4 are usually used into equipment. Although stones +3 are perfect for starter equipment, stones +0 to +3 are used to melt Ores into Refined Ores. They can also be used to melt

Glimmerstones into Gaya.
- In case you are not satisfied with the current inserted spirit stones, it is possible to remove them by using

Spirit Stone Scroll. This item will remove all present spirit stones and they will be placed into your Inventory. This will leave a mark (broken stone). You can also use 
Scroll of Correction. This item will remove the last added spirit stone without leaving any marks.
Spirit Stones for shoes
- Since version 25.2, it is possible to insert spirit stones to Shoes. You will need to make sockets first. This can be done by using

Black Diamond Drill. All shoes can have a maximum of 2 sockets unless the champion level 1 shoes. That shoe can have 3.
Origin
List of Spirit Stones
Armour
Weapon
Gloves
| Image
|
Item
|
Info
|
+0
|
+1
|
+2
|
+3
|
+4
|
|
|
Demon Stone
|
Imbued with Sung Ma's will (STR/VIT/RES/INT)
|
+1
|
+3
|
+6
|
+9
|
+15
|
|
|
Mighty Demon Stone
|
Imbued with Sung Ma's will (STR/VIT/RES/INT)
|
+1 (2)
|
+3 (6)
|
+6 (12)
|
+9 (18)
|
+15 (30)
|
Shoes