Jewels are MU Online's currency, its upgrade path and its crafting fuel — seven stones that every player, from day one to endgame, spends every session. This guide explains what each one does, where it drops, what it's worth trading for, and the full Jewel of Harmony options read from our server's own files.
| Jewels at a glance | |
|---|---|
| Total types | 7: Bless, Soul, Chaos, Life, Creation, Harmony, Gemstone |
| Trading unit | Jewel of Bless = the de facto currency; everything is priced in "bless" |
| Where they drop | All monsters past level ~25; bosses and events drop in quantity |
| Can fail? | Bless never fails; Soul can fail (item drops to +0); Harmony and Life always succeed |
| Most common mistake | Souling past the safe point without Bless backing — see the upgrade table |
The seven jewels
| Jewel | What it does | Fails? | Where to spend first |
|---|---|---|---|
| Jewel of Bless | Upgrades item +1 level (up to +6) | Never | Your weapon, always — weapon damage scales hardest with level |
| Jewel of Soul | Upgrades item +1 level (up to +9); 50% success on +7 and above | Yes — item drops to +0 on fail | Only after +6 from Bless; never solo past +7 |
| Jewel of Chaos | Crafting fuel for the Chaos Machine | n/a (consumed in mixes) | First wings — the single best value craft |
| Jewel of Life | Adds a bonus option to an item (e.g. +HP, +mana, +AG) | Never (but overwrites existing Life option) | Armour pieces with no Life option yet |
| Jewel of Creation | Stat fruits at the Chaos Machine (+1 to +5 stat points) | n/a (consumed in mixes) | Stat fruits when a key stat gate is 1-5 points away |
| Jewel of Harmony | Adds a Harmony option to a weapon or armour piece | Never | Your endgame weapon — see the options table below |
| Gemstone | Upgrade material for refine stones (higher Harmony tiers) | n/a (consumed) | Saving for Harmony refinement when you have a real weapon to enhance |
The upgrade path (Bless → Soul → Harmony)
The standard item progression runs in three stages:
| Stage | Jewel | Range | Success rate | On failure |
|---|---|---|---|---|
| Safe upgrades | Bless | +1 to +6 | 100% | Cannot fail |
| Risky upgrades | Soul | +7 to +9 | 50% (75% with a Luck item) | Item drops to +0 |
| Harmony refinement | Harmony + Gemstone | Refine levels 1–10 | Varies by level | Option stays, refine level may drop |
The +7/+8/+9 stretch is where accounts are made and lost. A +9 item with a Soul failure goes back to +0, which means every Bless spent getting it to +6 was wasted too. The community rule: never Soul past +7 without a backup item, and treat +9 as a luxury, not a requirement.
Jewel of Harmony: the full options table
Read from our server's Harmony option file — minimum and maximum values per option level. The option you get is random within the range; higher Harmony refine levels push toward the maximum.
Weapon options
| Option | Min | Max |
|---|---|---|
| Minimum Attack Power Increase | +6 | +30 |
| Maximum Attack Power Increase | +6 | +30 |
| Strength Stat Increase | +6 | +30 |
| Agility Stat Increase | +6 | +30 |
| Attack Success Rate Increase | +179 | +500 |
| Critical Damage Increase | +8 | +40 |
| Excellent Damage Increase | +8 | +40 |
| Skill Attack Power Increase | +7 | +35 |
| Item Durability Increase | +6 | +30 |
| SD Reduction Rate Increase | +2 | +10 |
| 5% of Mana Converted to Attack | +9 | +45 |
Armour options (staff)
| Option | Min | Max |
|---|---|---|
| Strength Stat Increase | +6 | +30 |
| Agility Stat Increase | +6 | +30 |
| Energy Stat Increase | +6 | +30 |
| Vitality Stat Increase | +2 | +10 |
| Wizardry Attack Power Increase | +19 | +80 |
| Critical Damage Increase | +8 | +40 |
| Excellent Damage Increase | +8 | +40 |
| Skill Attack Power Increase | +7 | +35 |
| Item Durability Increase | +6 | +30 |
| SD Reduction Rate Increase | +2 | +10 |
| 5% of Mana Converted to Magic Attack | +20 | +85 |
The stat-increase options (+Strength, +Agility, +Energy) are the quiet best picks — they feed your gear requirements, letting you wear higher-tier items sooner.
Where jewels drop
| Jewel | Best sources |
|---|---|
| Bless / Soul | Every monster past ~level 25; bosses and Devil Square drop multiples |
| Chaos | Devil Square, Chaos Castle, boss kills, event rewards |
| Life | Blood Castle rewards, higher-level maps (Tarkan and above) |
| Creation | Kundun's Counterattack-era bosses, event shops, higher maps |
| Harmony | Season 2+ content: Kanturu bosses, Castle Siege, event rewards |
| Gemstone | Season 2+ content, refining NPCs, event shops |
On a high-exp server like ours, jewels rain — the bottleneck is not acquiring them but deciding what to spend them on. The tables above are the priority order.
Trade values (what a jewel is worth)
The community-maintained rough exchange on most servers:
| Unit | ≈ Value in Bless |
|---|---|
| Jewel of Soul | 0.5–1 Bless |
| Jewel of Chaos | 0.3–0.5 Bless |
| Jewel of Life | 1–2 Bless |
| Jewel of Creation | 2–3 Bless |
| Jewel of Harmony | 2–4 Bless |
These move with the server economy; on a fresh server week, Souls trade closer to Bless because everyone is upgrading. In the endgame, Harmonies dominate because refine stones eat them.
Spend them on our server
All jewels drop live on our Season 22 server — high exp, max stats 32,700, events running all day.
- Create your account — it takes about a minute
- Download the client and start farming
- Crafting guide: the Chaos Machine explained
MU Online jewels FAQ
What does Jewel of Bless do?
Upgrades an item from +0 to +6, one level at a time, with 100% success. It is the safe upgrade path and the game's de facto trading currency.
What does Jewel of Soul do?
Upgrades an item from +7 to +9 at 50% success (75% on a Luck item). On failure, the item drops to +0 — all previous upgrade levels are lost.
What does Jewel of Chaos do?
It is the crafting fuel for the Chaos Machine — required in nearly every mix from first wings to Divine Archangel weapons. See the Chaos Machine guide.
What does Jewel of Life do?
Adds a bonus option to an equipable item (e.g. +HP, +mana, +AG). It always succeeds but overwrites any existing Life option on that item.
What does Jewel of Creation do?
Used at the Chaos Machine to craft stat fruits, which grant +1 to +5 stat points on use. One of the best value crafts per jewel.
What does Jewel of Harmony do?
Adds a powerful random option to a weapon or armour piece — stat increases, critical damage, attack power, or the mana-conversion lines. See the full options table above.
Should I Soul past +7?
Only if you can afford to lose the item's level. A +9 Soul failure drops the item to +0. Community rule: never Soul past +7 without a backup.