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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 locations

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% dropsEdit

Item Quantity Rarity GE price
BonesBones1Always181

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 (requires JavaScript).

Main dropsEdit

Item Quantity Rarity GE price
Water runeWater rune1–39Common11–429
Earth runeEarth rune1–40Common14–560
Air talismanAir talisman1Uncommon402
Mind talismanMind talisman1Uncommon326
Fire talismanFire talisman1Uncommon1,416
Cosmic talismanCosmic talisman1Rare329
Body talismanBody talisman1Rare215
Water talismanWater talisman1Uncommon5,327
Earth talismanEarth talisman1Uncommon1,672
Nature talismanNature talisman1Rare1,047
Chaos talismanChaos talisman1Uncommon1,437
Steel platebodySteel platebody1Common2,005
Black clawBlack claw1Common[1]1,901
Off-hand black clawOff-hand black claw1Common[1]1,033
Black platebodyBlack platebody1Common2,009
Mithril hatchetMithril hatchet1Common1,164
Rock-shell glovesRock-shell gloves1Uncommon6,736
Rock-shell bootsRock-shell boots1Uncommon4,977
Black warhammerBlack warhammer1Uncommon1,316
Off-hand black warhammerOff-hand black warhammer1Uncommon477
Adamant longswordAdamant longsword1Uncommon4,570
Adamant warhammerAdamant warhammer1Rare2,403
Poison ivy seed 5Poison ivy seed1Uncommon53
Belladonna seed 5Belladonna seed1Uncommon513
Guam seed 5Guam seed1Uncommon18
Marrentill seed 5Marrentill seed1Uncommon12
Tarromin seed 5Tarromin seed1Uncommon23
Harralander seed 5Harralander seed1Uncommon21
Toadflax seed 5Toadflax seed1Uncommon3,951
Ranarr seed 5Ranarr seed1Rare1,284
Irit seed 5Irit seed1Rare605
Avantoe seed 5Avantoe seed1Rare766
Snapdragon seed 5Snapdragon seed1Rare671
Cadantine seed 5Cadantine seed1Rare7,432
Lantadyme seed 5Lantadyme seed1Rare2,164
Kwuarm seed 5Kwuarm seed1Rare7,493
Dwarf weed seed 5Dwarf weed seed1Very rare1,819
Torstol seed 5Torstol seed1Very rare4,878
Grimy guamGrimy guam1Uncommon178
Grimy marrentillGrimy marrentill1Uncommon242
Grimy tarrominGrimy tarromin1Uncommon37
Grimy harralanderGrimy harralander1Uncommon99
Grimy ranarrGrimy ranarr1Rare3,813
Grimy iritGrimy irit1Rare3,119
Grimy avantoeGrimy avantoe1Rare2,279
Grimy kwuarmGrimy kwuarm1Rare5,364
Grimy cadantineGrimy cadantine1Rare4,960
Grimy lantadymeGrimy lantadyme1Rare3,488
Grimy dwarf weedGrimy dwarf weed1Rare2,750
Coins 100Coins23–137Common23–137
Raw lobsterRaw lobster1Common102
Raw bassRaw bass1Common274
TinderboxTinderbox1Common214
CasketCasket1Rare2,349
Rock-shell splinterRock-shell splinter1Uncommon9,879
Rock-shell chunkRock-shell chunk1Rare6,346
Rock-shell shardRock-shell shard1Rare6,627
  1. ^ a b Main hand and off hand claws are dropped together.

Tertiary dropsEdit

Item Quantity Rarity GE price
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, luck potion 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 sapphire1Common1,019
Uncut emeraldUncut emerald1Common2,187
Uncut rubyUncut ruby1Common2,723
Uncut diamondUncut diamond1Common4,072
Uncut diamondUncut diamond45–55 (noted)Rare183,240–223,960
Loop half of a keyLoop half of a key1Common18,714
Tooth half of a keyTooth half of a key1Common25,177
Uncut dragonstoneUncut dragonstone1Uncommon11,180
Uncut dragonstoneUncut dragonstone45–55 (noted)Rare503,100–614,900
Dragon longswordDragon longsword1Common55,753
Dragon spearDragon spear1Rare36,142
BattlestaffBattlestaff180–220 (noted)Rare1,222,560–1,494,240
Rune javelinRune javelin5Rare920
Rune platebodyRune platebody1Uncommon37,487
Rune platebodyRune platebody15–25 (noted)Rare562,305–937,175
Shield left halfShield left half1Rare63,821
Dragon helmDragon helm1Uncommon58,309
Rune arrowheads 5Rune arrowheads113–137Common18,758–22,742
Onyx bolts 5Onyx bolts135–165Very rare1,046,115–1,278,585
Vecna skullVecna skull1Very rare52,200
Chaos talismanChaos talisman1Rare1,437
Nature talismanNature talisman1Rare1,047
Water talismanWater talisman65–82 (noted)Rare346,255–436,814
Earth talismanEarth talisman65–82 (noted)Rare108,680–137,104
Fire talismanFire talisman25–35 (noted)Rare35,400–49,560
Raw lobsterRaw lobster135–165 (noted)Common13,770–16,830
Raw sharkRaw shark225–275 (noted)Uncommon231,300–282,700
Big bonesBig bones72–90 (noted)Uncommon25,128–31,410
Dragon bonesDragon bones180–220 (noted)Rare292,320–357,280
CoalCoal200–1,100 (noted)Uncommon37,200–204,600
Gold oreGold ore90–110 (noted)Common12,960–15,840
Adamantite oreAdamantite ore180–220 (noted)Uncommon200,700–245,300
Adamant barAdamant bar14–16 (noted)Common36,750–42,000
Adamant barAdamant bar135–165 (noted)Rare354,375–433,125
Runite oreRunite ore90–110 (noted)Rare1,010,610–1,235,190
Rune barRune bar(noted)Common41,787
Rune barRune bar45–55 (noted)Rare626,805–766,095
Grimy torstolGrimy torstol90–110 (noted)Uncommon374,580–457,820
Grimy snapdragonGrimy snapdragon90–110 (noted)Uncommon285,120–348,480
Super restore (4)Super restore (4)45–55 (noted)Uncommon255,015–311,685
Prayer potion (4)Prayer potion (4)45–55 (noted)Uncommon221,355–270,545
Lantadyme seed 5Lantadyme seed14–16Uncommon30,296–34,624
Dwarf weed seed 5Dwarf weed seed14–16Uncommon25,466–29,104
Magic seed 5Magic seed4Uncommon424,012
Palm tree seed 5Palm tree seed10Rare1,905,040
FlaxFlax450–550 (noted)Common5,400–6,600
Molten glassMolten glass45–55 (noted)Common11,520–14,080
Soft claySoft clay450–550 (noted)Uncommon155,250–189,750
Yew logsYew logs68–82Uncommon14,484–17,466
Yew logsYew logs675–825 (noted)Rare143,775–175,725
Teak plankTeak plank45–55 (noted)Uncommon31,995–39,105
Mahogany plankMahogany plank270–330 (noted)Rare568,350–694,650
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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