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Last updated: September 7, 2026
On this page: How It Works · Weapon Options · Armor Options · Refining Stones · Best Rolls · FAQ
MU Online Harmony Options – Jewel of Harmony & Refining
The Jewel of Harmony adds a third stat layer to your gear: on top of item level and excellent options, one harmony option rolls onto the item and then levels up separately through refining stones. A perfect harmony line is what separates a good endgame weapon from a best-in-slot one.
How the System Works
| Step | Details |
|---|---|
| 1. Get the jewel | Drops in Kanturu maps and from Kanturu event monsters; also in event boxes |
| 2. Apply to item | Use on a normal, excellent or socketed item — one random option from that slot's pool, success is not guaranteed on classic settings |
| 3. Refine | Upgrade the option's level (up to 14 on stat-type lines) with Lower/Higher Refining Stones at Osbourne/Elpis in Kanturu |
| Removal | Jeweler NPC removes an unwanted harmony option for zen — re-roll by applying a new jewel |
Weapon Harmony Options
| Option | Range (lvl 1–13/14) | Verdict |
|---|---|---|
| Attack / Wizardry increase | +6 → +14 (staffs % based) | Top PvM pick |
| Skill attack increase | +10 → +50 | Best for skill spammers |
| Attack speed increase | +7 | Only until breakpoints are hit |
| Critical damage increase | +10 → +30 | Solid with high crit rate |
| Shield defense ignore rate | 3% → 15% | The PvP king vs SD builds |
| SD decrement / min-max ATK | varies | Situational filler |
Armor Harmony Options
| Option | Range | Verdict |
|---|---|---|
| Defense increase | +5 → +14 | Default pick on every piece |
| Damage decrease | 3% → 7% | Best PvP line, stacks across pieces |
| Max HP / Max SD increase | varies | Great on classes with % HP scaling |
| SD recovery / AG increase | varies | Caster utility |
| Defense success rate | varies | Filler unless meta favors it |
Refining Stones
Stones are crafted from spare items at the Kanturu NPC: normal items feed Lower stones, excellent items feed Higher stones — MU's original recycling system. Lower stones are cheap with modest success; Higher stones roughly double it. Failed refines knock the option down (or off) depending on server settings, so most players refine with Higher stones from level 5+ upward. Refining is where the real cost of harmony lies — a level 13–14 option burns hundreds of stones.
Best Rolls per Build
Melee PvM: Skill Attack on weapon, Defense on armor. Casters: Wizardry % on staff — the single strongest harmony line in the game. PvP: Shield Defense Ignore on weapon, Damage Decrease everywhere else. Budget: keep any Defense/HP roll and refine to ~10; chasing perfect rolls on five pieces is a jewel sink best left for late game. Pair harmony hunting with the jewels guide economy: on most servers a clean Jewel of Harmony trades well above Bless.
Every Harmony Option – Values by Refine Level
Exact numbers from the server’s harmony option file. Weight is the relative chance of rolling that line when the Jewel of Harmony is applied; Lv is the minimum item level the option needs; the value columns are what the line gives at each refining step (+0 is the freshly rolled option, each further step costs a Refining Stone and the listed Zen).
Physical items
| Option | Weight | Lv | +0 | +1 | +2 | +3 | +4 | +5 | +6 | +7 | +8 | +9 | +10 | +11 | +12 | +13 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Minimum Attack Damage Increase | 14% | 0 | 2 | 3 | 4 | 5 | 6 | 7 | 9 | 11 | 12 | 14 | 15 | 16 | 17 | 20 |
| Maximum Attack Damage Increase | 14% | 0 | 3 | 4 | 5 | 6 | 7 | 8 | 10 | 12 | 14 | 17 | 20 | 23 | 26 | 29 |
| Required Strength Decrease | 14% | 0 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | 23 | 26 | 29 | 32 | 35 | 37 | 40 |
| Required Agility Increase | 14% | 0 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | 23 | 26 | 29 | 32 | 35 | 37 | 40 |
| Attack Damage Increase (Min, Max) | 10% | 6 | — | — | — | — | — | — | 7 | 8 | 9 | 11 | 12 | 14 | 16 | 19 |
| Critical Damage Increase | 10% | 6 | — | — | — | — | — | — | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 30 |
| Skills Attack Damage Increase | 7% | 9 | — | — | — | — | — | — | — | — | — | 12 | 14 | 16 | 18 | 22 |
| Attack Success Rate Increase (PVP) | 7% | 9 | — | — | — | — | — | — | — | — | — | 5 | 7 | 9 | 11 | 14 |
| SD Decrease Rate Increase | 7% | 9 | — | — | — | — | — | — | — | — | — | 3 | 5 | 7 | 9 | 10 |
| Ignore SD Rate Increase | 3% | 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | 10 |
| Refine cost (Zen) to reach step | 100k | 110k | 120k | 130k | 140k | 150k | 200k | 220k | 240k | 280k | 320k | 360k | 400k | 500k | ||
Magical items
| Option | Weight | Lv | +0 | +1 | +2 | +3 | +4 | +5 | +6 | +7 | +8 | +9 | +10 | +11 | +12 | +13 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wizardy Damage Increase | 17% | 0 | 6 | 8 | 10 | 12 | 14 | 16 | 17 | 18 | 19 | 21 | 23 | 25 | 27 | 31 |
| Required Strength Decrease | 17% | 0 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | 23 | 26 | 29 | 32 | 35 | 37 | 40 |
| Required Agility Increase | 17% | 0 | 6 | 8 | 10 | 12 | 14 | 16 | 20 | 23 | 26 | 29 | 32 | 35 | 37 | 40 |
| Skills Attack Damage Increase | 13% | 6 | — | — | — | — | — | — | 7 | 10 | 13 | 16 | 19 | 22 | 25 | 30 |
| Critical Damage Increase | 13% | 6 | — | — | — | — | — | — | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 28 |
| SD Decrease Rate Increase | 9% | 9 | — | — | — | — | — | — | — | — | — | 4 | 6 | 8 | 10 | 13 |
| Attack Success Rate Increase (PVP) | 9% | 9 | — | — | — | — | — | — | — | — | — | 5 | 7 | 9 | 11 | 14 |
| Ignore SD Rate Increase | 4% | 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | 15 |
| Refine cost (Zen) to reach step | 100k | 110k | 120k | 130k | 140k | 150k | 200k | 220k | 240k | 280k | 320k | 360k | 400k | 500k | ||
Defensive items
| Option | Weight | Lv | +0 | +1 | +2 | +3 | +4 | +5 | +6 | +7 | +8 | +9 | +10 | +11 | +12 | +13 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Defense Increase | 22% | 0 | 3 | 4 | 5 | 6 | 7 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 25 |
| Maximum AG Increase | 17% | 3 | — | — | — | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 25 |
| Maximum HP Increase | 17% | 3 | — | — | — | 7 | 9 | 11 | 13 | 15 | 17 | 19 | 21 | 23 | 25 | 30 |
| Life Auto Increments Increase | 13% | 6 | — | — | — | — | — | — | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Mana Auto Increments Increase | 9% | 9 | — | — | — | — | — | — | — | — | — | 1 | 2 | 3 | 4 | 5 |
| Defense Success rate Increase (PVP) | 9% | 9 | — | — | — | — | — | — | — | — | — | 3 | 4 | 5 | 6 | 8 |
| Damage Decrement Increase | 9% | 9 | — | — | — | — | — | — | — | — | — | 3 | 4 | 5 | 6 | 7 |
| SD Ratio Increase | 4% | 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 |
| Refine cost (Zen) to reach step | 100k | 110k | 120k | 130k | 140k | 150k | 200k | 220k | 240k | 280k | 320k | 360k | 400k | 500k | ||
Refining is safe for the item — a failed step destroys the Refining Stone, never the item or the option. Option value never drops.
Continue Reading
| Guide | Why it helps |
|---|---|
| Excellent options | The layer harmony stacks on top of. |
| Jewels guide | Where Harmony sits in the jewel economy. |
| Kanturu event | The home of harmony jewels and refining NPCs. |
| Socket system | The alternative custom-option path. |
FAQ
Can one item have two harmony options?
No — one per item, always.
Does harmony survive Chaos Machine upgrades?
+10/+11 combinations remove the option on classic versions — add harmony after upgrading. Check your server's settings.
Can I put harmony on ancient items?
No on classic settings — normal, excellent and socket items only.
Where do I remove a bad option?
The Jeweler NPC (Osbourne) in Kanturu Ruins — zen fee scales with item level.