Jewel farming guide in MU Online: how to stack Bless, Soul, Life and more
Complete Jewel farming guide for MU Online Season 6: all 6 Jewel types explained (JoB, JoS, JoL, JoChaos, JoCreation, JoGuardian) with their uses and relative values, the best monster spots and events for maximizing JoB accumulation per session, the event-farming synergy (Blood Castle and Devil Square contribute 30-50% of a player's weekly JoB supply), how Jewel drop rate scales with monster level (why farming low-level monsters for Jewels is dramatically inefficient), class-specific farming advice (DW and MG clear faster = more drops per session), how to hold and trade Jewels vs spending them (building a Bless reserve), why JoCreation is impossible to farm like regular Jewels (boss-exclusive drops only), and the weekly Jewel income model (what a consistent player earns per week through events + farming).
Jewels are the backbone of MU Online's economy. Every upgrade, every wing combination, every major trade involves Jewels. A player who understands Jewel farming — and does it consistently — builds a resource base that accelerates every other aspect of progression.
Jewels are the backbone of MU Online's economy. Every upgrade, every wing combination, every major trade involves Jewels. A player who understands Jewel farming — and does it consistently — builds a resource base that accelerates every other aspect of progression.
All jewel types and their values
JEWEL OF BLESS (JoB) — THE HARD CURRENCY:
What it does:
→ Upgrades items from +0 to +6 (100% success rate — never fails, never reduces item level)
→ MU Online's most important Jewel: every player needs it continuously
→ Server's effective "hard currency" for player-to-player trades
Sources:
→ Drops from any monster (but drop rate scales with monster level)
→ Blood Castle and Devil Square event rewards
→ Boss kill rewards
→ Player trades (buy JoB with items you don't need)
Approximate value: 1× (baseline — all other values relative to JoB)
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JEWEL OF SOUL (JoS) — THE RISK JEWEL:
What it does:
→ Upgrades items from +7 to +9 (has a FAIL chance — failure drops item -1 level)
→ Required for pushing items above +6
Sources:
→ Same monster drop sources as JoB (slightly less common than JoB on most servers)
→ Event rewards, boss drops
Approximate value: 0.5-0.8 JoB
The fail mechanic:
→ At +7: using JoS has a chance to fail → item drops to +6 (still usable, no item damage)
→ At +8: using JoS has a higher fail chance → item drops to +7 on fail
→ At +9: maximum upgrade level via JoS
→ With "Luck" option (JoL applied): reduces JoS fail chance by approximately 50%
→ Without Luck: fail rate is significant
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JEWEL OF LIFE (JoL) — THE OPTION ADDER:
What it does:
→ Adds an "option" (additional stat) to an item
→ Options added by JoL: additional damage %, additional defense %, additional max HP, etc.
→ Each JoL application: rolls a random option (you get what you get)
→ Up to 3 JoL options can be stacked on a single item
Sources:
→ Less common than JoB/JoS from monster drops
→ Event rewards, trade
Approximate value: 0.8-1.2 JoB
Special use — "Luck" application:
→ When JoL is applied to an item: has a chance to give "Luck" status
→ Luck: reduces JoS fail chance (extremely valuable on items you plan to upgrade above +6)
→ Getting Luck: random — you may need multiple JoL applications
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JEWEL OF CHAOS (JoChaos) — THE COMBINATION CATALYST:
What it does:
→ Required for Chaos Goblin combinations (Wings, pets, item upgrades)
→ Consumed in the combination attempt whether it succeeds or fails
→ Never used for direct item upgrades (that's JoB and JoS)
Sources:
→ Monster drops (common — drops more frequently than JoB on most servers)
→ Event rewards
Approximate value: 0.3-0.7 JoB
Important: JoChaos supply is usually plentiful; stockpile naturally while farming
Most players: accumulate JoChaos passively without dedicated farming
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JEWEL OF CREATION (JoCreation) — THE RAREST:
What it does:
→ Required for Wing Level 3 combination (1 JoCreation per Wing L3)
→ No other purpose in base S6 (except some server-specific Chaos Goblin combinations)
Sources in Season 6 ONLY:
→ Kundun boss (Kalima 7) — primary source
→ Nightmare boss (Kanturu event) — secondary source
→ Selupan (Raklion) — tertiary source, only if server has Raklion map
CRITICAL: JoCreation DOES NOT drop from regular monsters
→ Any guide that says "farm JoCreation at [map]" is wrong
→ It is strictly boss-exclusive in S6
Approximate value: 50-200+ JoB (the most valuable jewel in S6)
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JEWEL OF GUARDIAN (JoGuardian):
What it does:
→ Used in specific Chaos Goblin combinations (Guardian Angel and other pet-related combinations)
→ Less commonly needed than other Jewels
Sources:
→ Monster drops (less common)
→ Specific event rewards
Approximate value: 1-3 JoB (server-specific)Best Jewel farming methods
METHOD 1: EVENT FARMING (HIGHEST JoB/HOUR RATE):
Blood Castle:
→ Duration: 15 minutes
→ JoB from a single BC run: approximately 3-8 JoB equivalent (drops + event rewards)
→ At 4-6 BC runs per day: 12-48 JoB per day from BC alone
→ Annualized: BC alone provides ~840-3360 JoB equivalent per month
Devil Square:
→ Duration: 15 minutes
→ JoB from a single DS run: approximately 3-8 JoB equivalent
→ Same frequency and income as BC: another 12-48 JoB per day
Combined BC + DS (assuming 4 each per day played):
→ 24-96 JoB per day from events alone
→ This is 30-50% of a consistent player's total JoB income
Why events outperform farming:
→ Events: ~5 JoB per 15 minutes = 20 JoB per hour
→ Open-world farming at Tarkan level: ~1-2 JoB per hour
→ Events are 10-20× more JoB-efficient per unit of time
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METHOD 2: MAP FARMING (SUSTAINED INCOME):
JoB drop rate by monster level (approximate):
→ Lorencia monsters (level 1-30 equivalent): almost no JoB drops
→ Dungeon monsters: occasional JoB drops
→ Tarkan monsters: consistent JoB drop rate
→ Aida monsters: better JoB drop rate than Tarkan
→ Kalima 4-6 monsters: highest JoB drop rate from non-boss monsters in S6
The scaling principle:
→ A Kalima 5 monster drops JoB approximately 5-10× more often than a Tarkan 1 monster
→ At the same farming speed: Kalima gives dramatically more JoB per hour than Tarkan
→ Moving to harder maps: improves BOTH EXP per hour AND JoB per hour simultaneously
Best farming maps for JoB (in order):
→ Rank 1: Kalima 5-7 (highest monster level, best JoB rate)
→ Rank 2: Aida 2 (excellent JoB rate, highly contested PvP zone)
→ Rank 3: Aida 1 (good JoB rate, less contested than Aida 2)
→ Rank 4: Tarkan 2 (consistent Zaikan drops, decent JoB rate)
→ Rank 5: Icarus (good EXP + moderate JoB drops)
Monsters per hour vs JoB per monster:
→ The compound that matters is: (kill speed) × (JoB drop rate per monster)
→ A class that kills 200 monsters/hour in Tarkan vs 100 monsters/hour in Kalima 5:
→ Tarkan: 200 × low JoB rate = X JoB/hour
→ Kalima: 100 × high JoB rate = likely still more JoB/hour
→ The higher drop rate per kill usually compensates for slower speed in harder areas
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METHOD 3: BOSS KILLS:
For JoB and rare materials:
→ Kundun (Kalima 7): drops JoB + JoCreation + rare items
→ Nightmare (Kanturu event): drops JoB + JoCreation
→ Balgass (Crywolf failure): drops Loch's Feather + some JoB
→ Golden Invasion monsters (Golden Budge Dragon, Golden Goblin): drops Box of Luck → Jewels
Organizing boss kills:
→ Requires a guild or finding a boss run group
→ Guild-organized Kundun kills: the standard end-game activity
→ How to join: ask in guild chat or server Discord for "Who's running Kundun today?"
→ Most guilds share boss drops among participants (rolls or fixed distribution per guild rules)
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WEEKLY JoB INCOME MODEL (MID-RATE SERVER, CONSISTENT PLAYER):
Events (BC + DS, 4 of each per day, 5 days/week):
→ 5 JoB avg per event × 8 events × 5 days = ~200 JoB per week from events alone
Map farming (2 hours/day at Aida level, 5 days/week):
→ ~2-4 JoB per farming hour × 2h × 5 days = ~20-40 JoB per week from farming
Boss kills (Kundun x2 per week, guild-organized):
→ ~5-10 JoB per Kundun run × 2 runs = ~10-20 JoB per week from bosses
Total weekly estimate: 230-260 JoB per week
Per month: ~1000-1100 JoB equivalent income
This is the baseline: actual numbers vary dramatically by server rates, drop configuration, and player consistencyJewel spending strategy
WHAT TO SPEND JoB ON:
Priority 1 — Safe upgrades on your primary gear (+0 to +6):
→ JoB's core use: upgrade your most important items from +0 to +6
→ At +6: the item is maximally safely upgraded (JoB can't take it higher)
→ Cost: 6 JoB per item (1 per upgrade level, never fails)
Priority 2 — Trading for better items:
→ Once you have 30-50 JoB reserve: consider trading for Excellent items with better options
→ A 20 JoB purchase of a BiS Excellent item: better ROI than spending 20 JoB on incremental upgrades
Priority 3 — Wing combinations (only after reserve is built):
→ Wing combinations consume JoB (via JoChaos which equals JoB in value)
→ Don't combine Wings until you have a reserve AND the specific wing materials ready
WHAT NOT TO SPEND JoB ON:
→ JoS upgrades above +6 on items that aren't your end-goal gear
(the fail risk isn't worth it on temporary items)
→ Chaotic Goblin combinations without understanding the success rate
→ Excessive trading speculation (buy-to-resell) before you have a secure gear base
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THE JOB RESERVE RULE:
Minimum maintained reserve: 30 JoB
Why this number:
→ 30 JoB = enough to fully upgrade (+0 to +6) 5 items safely
→ 30 JoB = enough to trade for most mid-game Excellent items
→ 30 JoB = enough to attempt Wing L1 combinations with backup materials
How to maintain the reserve:
→ Track your JoB count after each session
→ If below 30: no major spending until you rebuild to 30
→ The reserve protects you from being caught without resources when an opportunity appearsSee also the item upgrade guide (how JoB and JoS are used to safely and riskily upgrade items), the Blood Castle guide (full event guide for BC runs), the Devil Square guide (DS farming strategy per level), the Chaos Goblin combination guide (how JoChaos is used in wing and pet crafting), and the Kundun guide (how to organize and join Kundun kill groups for JoCreation).
Frequently asked questions
What's the fastest way to accumulate Jewels of Bless?
Three-part strategy: (1) Never miss Blood Castle or Devil Square — each event gives JoB drops equivalent to 25-40 minutes of farming, (2) Farm at the highest monster level your character can clear efficiently (JoB drop rate scales with monster level — Kalima 5 monsters drop JoB 5-10× more often than Tarkan 1 monsters), (3) Never NPC-sell Jewels — every JoB NPC-sold for a few thousand Zen is a JoB you no longer have for upgrading or trading. Combine all three and your JoB income is maximized.
How many Jewels of Bless should I have in reserve at all times?
Minimum: 30 JoB reserve (enough for emergencies — an upgrade opportunity, a sudden bargain in trade chat). Optimal: 50-100 JoB reserve. Never spend your reserve down to zero unless you're making a definitive investment (Wing combination, gear set completion). The JoB reserve is your safety net: it lets you take advantage of good trades without passing on them due to empty pockets. Building to 50 JoB should be every player's first economic milestone.
Is Jewel of Soul more or less valuable than Jewel of Bless?
Jewel of Soul is generally worth 0.5-0.8 JoB depending on the server. JoB is more valuable because it's completely safe (+0 to +6 with zero failure risk), while JoS has a fail chance above +6 (which means not everyone wants to use it). The extra risk premium makes JoS slightly less liquid (harder to sell) and slightly less valuable per unit than JoB. When calculating your Jewel wealth: count JoS at roughly 0.6× JoB value.
Where does Jewel of Creation come from and can I farm it like regular Jewels?
Jewel of Creation drops ONLY from three boss monsters in Season 6: Kundun (Kalima 7), Nightmare (Kanturu event), and Selupan (Raklion map if available). Unlike JoB, JoS, and JoL (which drop from any appropriately-leveled monster), JoCreation cannot be 'farmed' by grinding regular spots. It only comes from organizing or joining boss kill groups. This is why JoCreation is worth 50-200+ JoB on most servers — the supply is strictly limited by boss spawn frequency.