MU Online Jewels Guide

Jewels are the most important items in MU Online. You use them to power up your gear, to feed the Chaos Machine (a special crafting NPC), to build wings and items, and even as money when you trade with other players. This guide walks you through every main jewel — Bless, Soul, Chaos, Life, Creation, Guardian and Harmony — what each one does, how to use them without wrecking your stuff, and where to farm (grind for) them.

What jewels are in MU Online

Jewels are small items you can stack up in your bag and use up over time. You use them in two main places: at the Chaos Machine (a crafting machine run by the Goblin NPC in the town of Noria) and by right-clicking the jewel onto a piece of gear.

Jewels do three jobs:

• They raise an item's upgrade level (make it stronger, like +1, +2, and so on).
• They add or improve item options (extra bonus stats on your gear).
• They act as ingredients for crafting wings, better items and combinations.

Jewels are always in demand and never go out of style, so they also became the game's trade money. Most players set prices in stacks of Bless, Soul or Chaos instead of using Zen (the basic in-game gold).

The core jewels and what they do

Here is a quick rundown of each main jewel:

• Jewel of Bless: bumps an item's upgrade level up by +1. It is the safe choice, and most players use it all the way up to +6. It is also one of the main jewels for crafting and trading.
• Jewel of Soul: also adds +1, but it can fail. If it fails, your item can lose levels or drop back to +0. It costs less than Bless, but it is riskier.
• Jewel of Chaos: this is the crafting jewel. You use it in the Chaos Machine to combine items — to make wings, build better gear, and push high-level upgrades (+7 and above).
• Jewel of Life: adds or re-rolls (randomly changes) an item's additional option, which is the extra bonus stat shown as +4, +8 or +12. It can fail and lower the bonus too, so it is high risk but high reward.
• Jewel of Creation: a crafting ingredient that was added in later updates. You use it for higher-end crafts, like 380 items (a stronger gear tier) and certain combinations.
• Jewel of Guardian: used to add or combine Guardian (defensive) upgrades, and in some of the later crafting recipes.
• Jewel of Harmony & refining stones: a separate upgrade system (explained further down). It adds strong "Harmony" bonus stats that you can make stronger or remove later.

Jewel reference table

Upgrading items from +0 to +15

The normal way to upgrade is to use Bless and Soul for the safe, early levels, then move to the Chaos Machine for the risky, high levels. Here is the step-by-step:

1. +1 to +6: use Jewel of Bless (a safe +1 each time) or Jewel of Soul (cheaper, but it can fail). Most players play it safe and use Bless all the way to +6.
2. +7 to +9: you do this at the Chaos Machine by mixing Bless, Soul and Chaos together. The chance of success goes down, and if it fails your item can break or drop a level.
3. +10 and higher: on servers that allow these levels, you need special jewels or items, and the risk of failing is at its highest.

Adding options with Jewel of Life

The "additional option" is a bonus stat line on an item. It gives extra damage on weapons or extra defense on armor, and it shows up as +4, +8, +12, +16 (and even higher on some servers).

Jewel of Life adds this bonus or bumps it up one step. But watch out: if it fails, it can drop the bonus instead. Because of that, a lot of players only use Life on items they don't mind losing, or they use the server's safety features to protect the roll (the random result).

The Jewel of Harmony system

Harmony is its own upgrade system, separate from everything above. With a Jewel of Harmony (plus refining stones, which are special stones you make by breaking down items), you can add a strong "Harmony option" to a weapon or armor. That's just a powerful extra stat.

Harmony options have levels, you can re-roll them for a new result, and on most servers you can even remove one and put it back using a refining stone. That makes Harmony safer and more forgiving than a Jewel of Life roll. Once you have a solid set of gear, it is one of the best ways to push a piece past its normal stats.

Jewels as currency

Since jewels are useful to almost everyone, they turned into MU's real money. Stacks of Bless and Soul are the most common way to pay for things, while Chaos and Life are used for bigger trades.

On a healthy server, people always need jewels for crafting and upgrades, so they keep their value and prices stay fair. But if a server hands out way too many jewels — through crazy-high drop rates or a generous webshop (the cash shop where you buy items with real money) — jewels become worthless and trading dies off. That is a sign of a broken economy. We dig into this in the best servers guide under economy and pay-to-win.

Where to farm jewels

Farming just means grinding and killing things to get drops. Here are the best ways to stock up on jewels:

• Events: special timed dungeons like Blood Castle, Devil Square and Chaos Castle drop jewels reliably — see the events guide.
• Monster drops: certain maps and "jewel monsters" drop Bless, Soul and Chaos straight off their bodies.
• Boxes & bosses: opening a Box of Kundun (a loot box) and killing bosses can give you the rarer jewels like Life and Creation.
• Trade: sell the gear you farm and swap it for the jewels you actually want.

How fast the jewels roll in depends on your server's drop and event settings. When you are picking where to play, compare how generous the drops are — start with the EXP (experience points) and drop rates guide and check out the live server ranking.