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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
BonesBones1Always191

Runes/TalismansEdit

Item Quantity Rarity GE price
Water runeWater rune1–39Common11–429
Earth runeEarth rune1–40Common10–400
Air talismanAir talisman1Uncommon192
Mind talismanMind talisman1Uncommon421
Fire talismanFire talisman1Uncommon1,887
Cosmic talismanCosmic talisman1Rare401
Body talismanBody talisman1Rare390
Water talismanWater talisman1Uncommon7,061
Earth talismanEarth talisman1Uncommon2,005
Nature talismanNature talisman1Rare907
Chaos talismanChaos talisman1Uncommon1,003

Weaponry/ArmourEdit

Item Quantity Rarity GE price
Steel platebodySteel platebody1Common2,477
Black clawBlack claw1Common[1]934
Off-hand black clawOff-hand black claw1Common[1]776
Black platebodyBlack platebody1Common2,298
Mithril hatchetMithril hatchet1Common1,304
Rock-shell glovesRock-shell gloves1Uncommon11,440
Rock-shell bootsRock-shell boots1Uncommon7,318
Black warhammerBlack warhammer1Uncommon1,216
Off-hand black warhammerOff-hand black warhammer1Uncommon396
Adamant longswordAdamant longsword1Uncommon4,678
Adamant warhammerAdamant warhammer1Rare3,212
  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 6,143 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 seed1Uncommon76
Belladonna seed 5Belladonna seed1Uncommon416
Guam seed 5Guam seed1Uncommon12
Marrentill seed 5Marrentill seed1Uncommon12
Tarromin seed 5Tarromin seed1Uncommon20
Harralander seed 5Harralander seed1Uncommon12
Toadflax seed 5Toadflax seed1Uncommon706
Ranarr seed 5Ranarr seed1Rare939
Irit seed 5Irit seed1Rare398
Avantoe seed 5Avantoe seed1Rare227
Snapdragon seed 5Snapdragon seed1Rare353
Cadantine seed 5Cadantine seed1Rare4,842
Lantadyme seed 5Lantadyme seed1Rare910
Kwuarm seed 5Kwuarm seed1Rare5,539
Dwarf weed seed 5Dwarf weed seed1Very rare969
Torstol seed 5Torstol seed1Very rare2,784

HerbsEdit

Item Quantity Rarity GE price
Grimy guamGrimy guam1Uncommon103
Grimy marrentillGrimy marrentill1Uncommon134
Grimy tarrominGrimy tarromin1Uncommon35
Grimy harralanderGrimy harralander1Uncommon80
Grimy ranarrGrimy ranarr1Rare2,459
Grimy iritGrimy irit1Rare4,297
Grimy avantoeGrimy avantoe1Rare2,701
Grimy kwuarmGrimy kwuarm1Rare6,343
Grimy cadantineGrimy cadantine1Rare5,886
Grimy lantadymeGrimy lantadyme1Rare3,808
Grimy dwarf weedGrimy dwarf weed1Rare3,617

OtherEdit

Item Quantity Rarity GE price
Coins 100Coins23–137Common23–137
Raw lobsterRaw lobster1Common95
Raw bassRaw bass1Common258
TinderboxTinderbox1Common138
CasketCasket1Rare2,282
Rock-shell splinterRock-shell splinter1Uncommon11,193
Rock-shell chunkRock-shell chunk1Rare9,074
Rock-shell shardRock-shell shard1Rare7,920
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.
A ring of wealth or collector's insignia are 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 sapphire1Common1,000
Uncut emeraldUncut emerald1Common2,019
Uncut rubyUncut ruby1Common3,497
Uncut diamondUncut diamond1Common4,828
Uncut diamondUncut diamond45–55 (noted)Rare217,260–265,540
Loop half of a keyLoop half of a key1Common15,000
Tooth half of a keyTooth half of a key1Common23,547
Uncut dragonstoneUncut dragonstone1Uncommon13,900
Uncut dragonstoneUncut dragonstone45–55 (noted)Rare625,500–764,500
Dragon longswordDragon longsword1Common56,846
Dragon spearDragon spear1Rare33,962
BattlestaffBattlestaff180–220 (noted)Rare1,252,260–1,530,540
Rune javelinRune javelin5Rare955
Rune platebodyRune platebody1Uncommon37,185
Rune platebodyRune platebody15–25 (noted)Rare557,775–929,625
Shield left halfShield left half1Rare63,821
Dragon helmDragon helm1Uncommon58,583
Rune arrowheads 5Rune arrowheads113–137Common18,532–22,468
Onyx bolts 5Onyx bolts135–165Very rare1,085,535–1,326,765
Vecna skullVecna skull1Very rare73,982
Chaos talismanChaos talisman1Rare1,003
Nature talismanNature talisman1Rare907
Water talismanWater talisman65–82 (noted)Rare458,965–579,002
Earth talismanEarth talisman65–82 (noted)Rare130,325–164,410
Fire talismanFire talisman25–35 (noted)Rare47,175–66,045
Raw lobsterRaw lobster135–165 (noted)Common12,825–15,675
Raw sharkRaw shark225–275 (noted)Uncommon228,825–279,675
Big bonesBig bones72–90 (noted)Uncommon27,792–34,740
Dragon bonesDragon bones180–220 (noted)Rare285,840–349,360
CoalCoal200–1,100 (noted)Uncommon31,600–173,800
Gold oreGold ore90–110 (noted)Common11,610–14,190
Adamantite oreAdamantite ore180–220 (noted)Uncommon173,880–212,520
Adamant barAdamant bar14–16 (noted)Common38,654–44,176
Adamant barAdamant bar135–165 (noted)Rare372,735–455,565
Runite oreRunite ore90–110 (noted)Rare951,750–1,163,250
Rune barRune bar(noted)Common41,826
Rune barRune bar45–55 (noted)Rare627,390–766,810
Grimy torstolGrimy torstol90–110 (noted)Uncommon474,660–580,140
Grimy snapdragonGrimy snapdragon90–110 (noted)Uncommon381,690–466,510
Super restore (4)Super restore (4)45–55 (noted)Uncommon261,540–319,660
Prayer potion (4)Prayer potion (4)45–55 (noted)Uncommon148,230–181,170
Lantadyme seed 5Lantadyme seed14–16Uncommon12,740–14,560
Dwarf weed seed 5Dwarf weed seed14–16Uncommon13,566–15,504
Magic seed 5Magic seed4Uncommon349,312
Palm tree seed 5Palm tree seed10Rare1,203,280
FlaxFlax450–550 (noted)Common4,050–4,950
Molten glassMolten glass45–55 (noted)Common12,690–15,510
Soft claySoft clay450–550 (noted)Uncommon144,000–176,000
Yew logsYew logs68–82Uncommon11,288–13,612
Yew logsYew logs675–825 (noted)Rare112,050–136,950
Teak plankTeak plank45–55 (noted)Uncommon35,595–43,505
Mahogany plankMahogany plank270–330 (noted)Rare629,100–768,900
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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