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Giant rock crab

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Giant rock crabs are massive versions of the weaker Rock crab. They lie in wait for prey, disguised as large boulders. When approached, they attack, unless they have become tolerant, in which case they remain as "boulders" - attempting to target them gives the message "Invalid target."

Giant Rock Crabs are good droppers of charms, as they drop 3 of them at a time. They also drop various black equipment (platebody and claws), worth a decent sum of coins. They are the only droppers of rock-shell parts, which are needed to create Rock-shell armour.

LocationsEdit

Chaos Tunnels entrances

Use the middle south entrance just east of the wizard who teleports players to the Abyss. This is labelled entrance number 2 and goes directly to the giant rock crabs.

StrategyEdit

Giant Rock Crabs have a fairly high resistance to Melee and Ranged attacks, and thus are only effectively killed using Magic.

In the Chaos Tunnels, they will eventually lose aggression. When they do, just leave the cave via the rope exit. Then just go straight back down the crevice.

RetreatEdit

The Giant Rock Crab is one of few monsters that will retreat from battle when they become critically wounded.

DropsEdit

100%Edit

Item Quantity Rarity GE price
BonesBones1Always146

Runes/TalismansEdit

Item Quantity Rarity GE price
Water runeWater rune1–39Common18–702
Earth runeEarth rune1–40Common18–720
Air talismanAir talisman1Uncommon198
Mind talismanMind talisman1Uncommon309
Fire talismanFire talisman1Uncommon2,375
Cosmic talismanCosmic talisman1Rare891
Body talismanBody talisman1Rare310
Water talismanWater talisman1Uncommon10,225
Earth talismanEarth talisman1Uncommon2,548
Nature talismanNature talisman1Rare943
Chaos talismanChaos talisman1Uncommon1,544

Weaponry/ArmourEdit

Item Quantity Rarity GE price
Steel platebodySteel platebody1Common2,545
Black clawBlack claw1Common[1]238
Off-hand black clawOff-hand black claw1Common[1]516
Black platebodyBlack platebody1Common2,517
Mithril hatchetMithril hatchet1Common311
Rock-shell glovesRock-shell gloves1Uncommon13,919
Rock-shell bootsRock-shell boots1Uncommon9,890
Black warhammerBlack warhammer1Uncommon742
Off-hand black warhammerOff-hand black warhammer1Uncommon308
Adamant longswordAdamant longsword1Uncommon3,237
Adamant warhammerAdamant warhammer1Rare3,138
  1. ^ a b Main hand and off hand claws are dropped together.

CharmsEdit

No charmGold charmGreen charmCrimson charmBlue charm
2–3%79–80%9–10%6–7%2%
Represents a 90% confidence range.
Based on a sample of 6,007 kills.
3 charms are dropped at a time.
Add data to the log
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SeedsEdit

Item Quantity Rarity GE price
Poison ivy seed 5Poison ivy seed1Uncommon31
Belladonna seed 5Belladonna seed1Uncommon513
Guam seed 5Guam seed1Uncommon14
Marrentill seed 5Marrentill seed1Uncommon9
Tarromin seed 5Tarromin seed1Uncommon11
Harralander seed 5Harralander seed1Uncommon49
Toadflax seed 5Toadflax seed1Uncommon119
Ranarr seed 5Ranarr seed1Rare804
Irit seed 5Irit seed1Rare141
Avantoe seed 5Avantoe seed1Rare403
Snapdragon seed 5Snapdragon seed1Rare329
Cadantine seed 5Cadantine seed1Rare978
Lantadyme seed 5Lantadyme seed1Rare3,133
Kwuarm seed 5Kwuarm seed1Rare1,574
Dwarf weed seed 5Dwarf weed seed1Very rare2,998
Torstol seed 5Torstol seed1Very rare2,507

HerbsEdit

Item Quantity Rarity GE price
Grimy guamGrimy guam1Uncommon206
Grimy marrentillGrimy marrentill1Uncommon175
Grimy tarrominGrimy tarromin1Uncommon45
Grimy harralanderGrimy harralander1Uncommon160
Grimy ranarrGrimy ranarr1Rare3,022
Grimy iritGrimy irit1Rare2,466
Grimy avantoeGrimy avantoe1Rare4,609
Grimy kwuarmGrimy kwuarm1Rare5,751
Grimy cadantineGrimy cadantine1Rare5,348
Grimy lantadymeGrimy lantadyme1Rare5,733
Grimy dwarf weedGrimy dwarf weed1Rare5,738

OtherEdit

Item Quantity Rarity GE price
Coins 100Coins23–137Common23–137
Raw lobsterRaw lobster1Common141
Raw bassRaw bass1Common292
TinderboxTinderbox1Common152
CasketCasket1Rare4,576
Rock-shell splinterRock-shell splinter1Uncommon13,142
Rock-shell chunkRock-shell chunk1Rare7,965
Rock-shell shardRock-shell shard1Rare9,118
Clue scroll (medium)Clue scroll (medium)1Very rareNot sold
Starved ancient effigyStarved ancient effigy1Very rareNot sold

Rare drop table dropsEdit

This monster has access to the rare drop table.
The ring of wealth is not required to access the table.
Show/hide rare drop table
Item Quantity Rarity GE price
Coins 1000Coins250–500; 3,000Common250–3,000
Uncut sapphireUncut sapphire1Common1,097
Uncut emeraldUncut emerald1Common1,987
Uncut rubyUncut ruby1Common3,278
Uncut diamondUncut diamond1Common6,260
Uncut diamondUncut diamond45–55 (noted)Rare281,700–344,300
Loop half of a keyLoop half of a key1Common18,101
Tooth half of a keyTooth half of a key1Common30,851
Uncut dragonstoneUncut dragonstone1Uncommon14,745
Uncut dragonstoneUncut dragonstone45–55 (noted)Rare663,525–810,975
Dragon longswordDragon longsword1Common57,124
Dragon spearDragon spear1Rare36,085
BattlestaffBattlestaff180–220 (noted)Rare1,381,860–1,688,940
Rune javelinRune javelin5Rare1,385
Rune platebodyRune platebody1Uncommon37,573
Rune platebodyRune platebody15–25 (noted)Rare563,595–939,325
Shield left halfShield left half1Rare64,619
Dragon helmDragon helm1Uncommon58,830
Rune arrowheads 5Rune arrowheads113–137Common17,515–21,235
Onyx bolts 5Onyx bolts135–165Very rare1,130,220–1,381,380
Vecna skullVecna skull1Rare78,597
Chaos talismanChaos talisman1Rare1,544
Nature talismanNature talisman1Rare943
Water talismanWater talisman65–82 (noted)Rare664,625–838,450
Earth talismanEarth talisman65–82 (noted)Rare165,620–208,936
Fire talismanFire talisman25–35 (noted)Rare59,375–83,125
Raw lobsterRaw lobster135–165 (noted)Common19,035–23,265
Raw sharkRaw shark225–275 (noted)Uncommon248,400–303,600
Big bonesBig bones79–90 (noted)Uncommon28,361–32,310
Dragon bonesDragon bones180–220 (noted)Rare538,020–657,580
CoalCoal200–1,100 (noted)Uncommon78,800–433,400
Gold oreGold ore90–110 (noted)Common14,490–17,710
Adamantite oreAdamantite ore180–220 (noted)Uncommon207,720–253,880
Adamant barAdamant bar15 (noted)Common54,750
Adamant barAdamant bar135–165 (noted)Rare492,750–602,250
Runite oreRunite ore90–110 (noted)Rare855,450–1,045,550
Rune barRune bar3 (noted)Common41,547
Rune barRune bar45–55 (noted)Rare623,205–761,695
Grimy torstolGrimy torstol90–110 (noted)Uncommon475,650–581,350
Grimy snapdragonGrimy snapdragon90–110 (noted)Uncommon324,720–396,880
Super restore (4)Super restore (4)45–55 (noted)Uncommon257,535–314,765
Prayer potion (4)Prayer potion (4)45–55 (noted)Uncommon167,490–204,710
Lantadyme seed 5Lantadyme seed14–16Uncommon43,862–50,128
Dwarf weed seed 5Dwarf weed seed14–16Uncommon41,972–47,968
Magic seed 5Magic seed4Uncommon364,876
Palm tree seed 5Palm tree seed10Rare1,016,510
FlaxFlax450–550 (noted)Common10,350–12,650
Molten glassMolten glass45–55 (noted)Common15,030–18,370
Soft claySoft clay450–550 (noted)Uncommon117,900–144,100
Yew logsYew logs68–82Uncommon15,980–19,270
Yew logsYew logs675–825 (noted)Rare158,625–193,875
Teak plankTeak plank45–55 (noted)Uncommon31,410–38,390
Mahogany plankMahogany plank270–330 (noted)Rare573,750–701,250
Brawling gloves (Melee)Brawling gloves (Melee)1Very rareNot sold
Brawling gloves (Magic)Brawling gloves (Magic)1Very rareNot sold
Brawling gloves (Ranged)Brawling gloves (Ranged)1Very rareNot sold
Brawling gloves (Agility)Brawling gloves (Agility)1Very rareNot sold
Brawling gloves (Cooking)Brawling gloves (Cooking)1Very rareNot sold
Brawling gloves (FM)Brawling gloves (FM)1Very rareNot sold
Brawling gloves (Fishing)Brawling gloves (Fishing)1Very rareNot sold
Brawling gloves (Hunter)Brawling gloves (Hunter)1Very rareNot sold
Brawling gloves (Mining)Brawling gloves (Mining)1Very rareNot sold
Brawling gloves (Prayer)Brawling gloves (Prayer)1Very rareNot sold
Brawling gloves (Smithing)Brawling gloves (Smithing)1Very rareNot sold
Brawling gloves (Thieving)Brawling gloves (Thieving)1Very rareNot sold
Brawling gloves (WC)Brawling gloves (WC)1Very rareNot sold
Crystal triskelion fragment 1Crystal triskelion fragment 11Very rareNot sold
Crystal triskelion fragment 2Crystal triskelion fragment 21Very rareNot sold
Crystal triskelion fragment 3Crystal triskelion fragment 31Very rareNot sold

Universal dropsEdit

Universal drops are dropped by nearly every monster outside of Daemonheim.
These drops are dropped alongside main drops.
Item Quantity Rarity GE price
Key tokenKey token1RareNot sold

TriviaEdit

  • After the 27 May 2009 update, Giant Rock Crabs dropped Charms in groups of three instead of ten. This hidden update initially angered players, though complaints died down as the rate of charm dropping was also increased.

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