![](http://image.webzen.net/Mu/guideImage/item/img_jewels_bless.jpg)
Jewel of Bless
Used to upgrade items up to +6. No chance of fail.
Can be stacked to piles of 10 and 30 for easier trade and some chaos combinations.
![](http://image.webzen.net/Mu/guideImage/item/img_jewels_soul.jpg)
Jewel of Soul
Upgrades items from 0 to 9 but has 50% chance to fail. On fail from 0 to 7 downgrades the item with 1. On fail from 8 to 9 downgrades the item to 0. Items with "Luck" have 75% success chance instead of 50%. Can be stacked to piles of 10 and 30 for easier trade and some chaos combinations.
![](http://image.webzen.net/Mu/guideImage/item/img_jewels_chaos.jpg)
Jewel of Chaos
This is the most common jewel. It is used in all item combinations.
![](http://image.webzen.net/Mu/guideImage/item/img_jewels_life.jpg)
Jewel of Life
Upgrades the normal option of an item with 50% success rate.
On fail reduces the option with 1 level.
![](http://image.webzen.net/Mu/guideImage/item/img_jewels_creation.jpg)
Jewel of Creation
Used for creating fruits that increase stats and resurrecting pets.
Also used for the socket system.
![](http://image.webzen.net/Mu/guideImage/item/img_jewels_bless_2.jpg)
Jewel of Guardian
Jewels of Guardian are used for upgrading Castle Defenses and creating Life Stones. Also used to add a "pink" option to special items.
![](http://image.webzen.net/Mu/guideImage/item/img_jewels_soul_2.jpg)
Jamstone
Used for creating Jewel of Harmony
![](http://image.webzen.net/Mu/guideImage/item/img_jewels_chaos_2.jpg)
Jewel of Harmony
Jewels of Harmony are used for adding a "yellow" additional option to your items.
![](http://image.webzen.net/Mu/guideImage/item/img_jewels_lowRefiningStone.jpg)
Low Refining Stone
Used for increasing Harmony Options.
![](http://image.webzen.net/Mu/guideImage/item/img_jewels_highRefiningSton.jpg)
High Refining Stone
Used for creating fruits that increase stats and resurrecting pets.
Also used for the socket system.