Giant Rock Crab

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Giant rock crabs are larger versions of rock crabs. Similarly to their smaller cousins, they disguise themselves as boulders, and only reveal themselves to be giant rock crabs if a player approaches within 1 tile of them, at which point they become aggressive and attackable. Attempting to target or attack them in their boulder disguise will cancel the action and give the player the message "Invalid target."

They are primarily known for being the only monsters to drop rock-shell fragment items, used to create rock-shell armour. They are also known for being a fast source of gold charms, having a high drop rate, relatively low lifepoints, and that three charms are dropped at once.

Giant rock crabs are one of the few monsters that use the retreat mechanic, where they will try to flee from battle when they become critically wounded.

Locations[edit | edit source]

Drops[edit | edit source]

100% drop[edit | edit source]

Charms[edit | edit source]

Nothing
1Gold charm.png
1Green charm.png
1Crimson charm.png
1Blue charm.png
2–3%78–80%9–10%6–7%2%
Represents a 90% confidence range based on a sample of 6,322 kills.
3 items are dropped at a time.
Add data to the log (requires JavaScript).

Main drop[edit | edit source]

  1. ^ a b Main hand and off hand claws are dropped together.

Tertiary drops[edit | edit source]

Rare drop table[edit | edit source]

This monster has access to the rare drop table.
Luck-enhancing items such as a ring of Wealth or luck of the Dwarves are not required to access the table.
Rare drop table.png Rare drop table:
Rare drop table
Item Members Quantity Rarity GE price High alch value
Coins_250.png: RS3 Giant Rock Crab drops Coins with rarity Common in quantity 250-500CoinsF2P icon.png250–500Common250-500250-500
Uncut sapphire.png: RS3 Giant Rock Crab drops Uncut sapphire with rarity Common in quantity 1Uncut sapphireF2P icon.png1Common95915
Uncut emerald.png: RS3 Giant Rock Crab drops Uncut emerald with rarity Common in quantity 1Uncut emeraldF2P icon.png1Common2,94830
Uncut ruby.png: RS3 Giant Rock Crab drops Uncut ruby with rarity Common in quantity 1Uncut rubyF2P icon.png1Common2,45060
Uncut diamond.png: RS3 Giant Rock Crab drops Uncut diamond with rarity Common in quantity 1Uncut diamondF2P icon.png1Common6,968120
Uncut diamond.png: RS3 Giant Rock Crab drops Uncut diamond with rarity Rare in quantity 45-55 (noted)Uncut diamondF2P icon.png45–55 (noted)Rare313,560-383,2405,400-6,600
Loop half of a key.png: RS3 Giant Rock Crab drops Loop half of a key with rarity Common in quantity 1Loop half of a key (m)P2P icon.png1Common15,8950
Tooth half of a key.png: RS3 Giant Rock Crab drops Tooth half of a key with rarity Common in quantity 1Tooth half of a key (m)P2P icon.png1Common15,7600
Uncut dragonstone.png: RS3 Giant Rock Crab drops Uncut dragonstone with rarity Uncommon in quantity 1Uncut dragonstone (m)P2P icon.png1Uncommon12,037600
Uncut dragonstone.png: RS3 Giant Rock Crab drops Uncut dragonstone with rarity Rare in quantity 45-55 (noted)Uncut dragonstone (m)P2P icon.png45–55 (noted)Rare541,665-662,03527,000-33,000
Dragon longsword.png: RS3 Giant Rock Crab drops Dragon longsword with rarity Common in quantity 1Dragon longsword (m)P2P icon.png1Common58,01860,000
Off-hand dragon longsword.png: RS3 Giant Rock Crab drops Off-hand dragon longsword with rarity Common in quantity 1Off-hand dragon longsword (m)P2P icon.png1Common57,75660,000
Dragon spear.png: RS3 Giant Rock Crab drops Dragon spear with rarity Rare in quantity 1Dragon spear (m)P2P icon.png1Rare35,08137,440
Battlestaff.png: RS3 Giant Rock Crab drops Battlestaff with rarity Rare in quantity 180-220 (noted)Battlestaff (m)P2P icon.png180–220 (noted)Rare561,780-686,620756,000-924,000
Rune javelin.png: RS3 Giant Rock Crab drops Rune javelin with rarity Rare in quantity 5Rune javelinF2P icon.png5Rare8901,870
Huge plated rune salvage.png: RS3 Giant Rock Crab drops Huge plated rune salvage with rarity Uncommon in quantity 1Huge plated rune salvageF2P icon.png1Uncommon38,85040,000
Huge plated rune salvage.png: RS3 Giant Rock Crab drops Huge plated rune salvage with rarity Rare in quantity 18-22 (noted)Huge plated rune salvageF2P icon.png18–22 (noted)Rare699,300-854,700720,000-880,000
Shield left half.png: RS3 Giant Rock Crab drops Shield left half with rarity Rare in quantity 1Shield left half (m)P2P icon.png1Rare68,81566,000
Dragon helm.png: RS3 Giant Rock Crab drops Dragon helm with rarity Uncommon in quantity 1Dragon helm (m)P2P icon.png1Uncommon58,74360,000
Rune arrowheads.png: RS3 Giant Rock Crab drops Rune arrowheads with rarity Common in quantity 113-137Rune arrowheadsF2P icon.png113–137Common16,272-19,728678-822
Onyx bolts.png: RS3 Giant Rock Crab drops Onyx bolts with rarity Very rare in quantity 135-165Onyx bolts (m)P2P icon.png135–165Very rare1,033,155-1,262,7451,104,165-1,349,535
Water talisman.png: RS3 Giant Rock Crab drops Water talisman with rarity Rare in quantity 68-82 (noted)Water talismanF2P icon.png68–82 (noted)Rare259,080-312,420136-164
Earth talisman.png: RS3 Giant Rock Crab drops Earth talisman with rarity Rare in quantity 68-82 (noted)Earth talismanF2P icon.png68–82 (noted)Rare8,976-10,824136-164
Raw lobster.png: RS3 Giant Rock Crab drops Raw lobster with rarity Common in quantity 135-165 (noted)Raw lobsterF2P icon.png135–165 (noted)Common50,355-61,54522,950-28,050
Raw shark.png: RS3 Giant Rock Crab drops Raw shark with rarity Uncommon in quantity 225-275 (noted)Raw shark (m)P2P icon.png225–275 (noted)Uncommon436,950-534,05040,500-49,500
Big bones.png: RS3 Giant Rock Crab drops Big bones with rarity Uncommon in quantity 68-82 (noted)Big bonesF2P icon.png68–82 (noted)Uncommon16,456-19,8440
Dragon bones.png: RS3 Giant Rock Crab drops Dragon bones with rarity Rare in quantity 180-220 (noted)Dragon bonesF2P icon.png180–220 (noted)Rare343,080-419,3200
Drakolith stone spirit.png: RS3 Giant Rock Crab drops Drakolith stone spirit with rarity Uncommon in quantity 25-35Drakolith stone spirit (m)P2P icon.png25–35Uncommon16,375-22,925Not alchemisable
Necrite stone spirit.png: RS3 Giant Rock Crab drops Necrite stone spirit with rarity Common in quantity 2Necrite stone spirit (m)P2P icon.png2Common6,472Not alchemisable
Phasmatite stone spirit.png: RS3 Giant Rock Crab drops Phasmatite stone spirit with rarity Uncommon in quantity 25-30Phasmatite stone spirit (m)P2P icon.png25–30Uncommon15,675-18,810Not alchemisable
Phasmatite stone spirit.png: RS3 Giant Rock Crab drops Phasmatite stone spirit with rarity Common in quantity 2Phasmatite stone spirit (m)P2P icon.png2Common1,254Not alchemisable
Necrite stone spirit.png: RS3 Giant Rock Crab drops Necrite stone spirit with rarity Rare in quantity 25-30Necrite stone spirit (m)P2P icon.png25–30Rare80,900-97,080Not alchemisable
Runite stone spirit.png: RS3 Giant Rock Crab drops Runite stone spirit with rarity Common in quantity 3Runite stone spiritF2P icon.png3Common5,517Not alchemisable
Orichalcite stone spirit.png: RS3 Giant Rock Crab drops Orichalcite stone spirit with rarity Rare in quantity 25-35Orichalcite stone spirit (m)P2P icon.png25–35Rare10,600-14,840Not alchemisable
Grimy torstol.png: RS3 Giant Rock Crab drops Grimy torstol with rarity Uncommon in quantity 90-110 (noted)Grimy torstol (m)P2P icon.png90–110 (noted)Uncommon516,420-631,1800
Grimy snapdragon.png: RS3 Giant Rock Crab drops Grimy snapdragon with rarity Uncommon in quantity 90-110 (noted)Grimy snapdragon (m)P2P icon.png90–110 (noted)Uncommon176,760-216,0400
Super restore (4).png: RS3 Giant Rock Crab drops Super restore (4) with rarity Uncommon in quantity 45-55 (noted)Super restore (4) (m)P2P icon.png45–55 (noted)Uncommon107,370-131,2308,100-9,900
Prayer potion (4).png: RS3 Giant Rock Crab drops Prayer potion (4) with rarity Uncommon in quantity 45-55 (noted)Prayer potion (4)F2P icon.png45–55 (noted)Uncommon176,895-216,2055,130-6,270
Lantadyme seed.png: RS3 Giant Rock Crab drops Lantadyme seed with rarity Uncommon in quantity 14-16Lantadyme seed (m)P2P icon.png14–16Uncommon9,478-10,832532-608
Dwarf weed seed.png: RS3 Giant Rock Crab drops Dwarf weed seed with rarity Uncommon in quantity 14-16Dwarf weed seed (m)P2P icon.png14–16Uncommon49,826-56,944532-608
Magic seed.png: RS3 Giant Rock Crab drops Magic seed with rarity Uncommon in quantity 4Magic seed (m)P2P icon.png4Uncommon124,3161,012
Palm tree seed.png: RS3 Giant Rock Crab drops Palm tree seed with rarity Rare in quantity 10Palm tree seed (m)P2P icon.png10Rare243,6001,520
Flax.png: RS3 Giant Rock Crab drops Flax with rarity Common in quantity 450-550 (noted)FlaxF2P icon.png450–550 (noted)Common53,550-65,4501,350-1,650
Molten glass.png: RS3 Giant Rock Crab drops Molten glass with rarity Common in quantity 45-55 (noted)Molten glass (m)P2P icon.png45–55 (noted)Common31,050-37,95045-55
Soft clay.png: RS3 Giant Rock Crab drops Soft clay with rarity Uncommon in quantity 450-550 (noted)Soft clayF2P icon.png450–550 (noted)Uncommon376,650-460,350450-550
Yew logs.png: RS3 Giant Rock Crab drops Yew logs with rarity Uncommon in quantity 68-82 (noted)Yew logsF2P icon.png68–82 (noted)Uncommon16,252-19,5986,528-7,872
Yew logs.png: RS3 Giant Rock Crab drops Yew logs with rarity Rare in quantity 675-825 (noted)Yew logsF2P icon.png675–825 (noted)Rare161,325-197,17564,800-79,200
Teak plank.png: RS3 Giant Rock Crab drops Teak plank with rarity Uncommon in quantity 45-55 (noted)Teak plank (m)P2P icon.png45–55 (noted)Uncommon26,865-32,83513,500-16,500
Mahogany plank.png: RS3 Giant Rock Crab drops Mahogany plank with rarity Rare in quantity 270-330 (noted)Mahogany plank (m)P2P icon.png270–330 (noted)Rare582,120-711,480243,000-297,000
Vecna skull.png: RS3 Giant Rock Crab drops Vecna skull with rarity Rare in quantity 1Vecna skull (m)P2P icon.png1Rare[d 1]202,4856,000
Blurberry Special.png: RS3 Giant Rock Crab drops Blurberry Special with rarity Very rare in quantity 1Blurberry Special (m)P2P icon.png1Very rare[d 2]11,52218
Cheese+tom batta.png: RS3 Giant Rock Crab drops Cheese+tom batta with rarity Very rare in quantity 1Cheese+tom batta (m)P2P icon.png1Very rare[d 3]4361
Hazelmere's signet ring.png: RS3 Giant Rock Crab drops Hazelmere's signet ring with rarity Very rare in quantity 1Hazelmere's signet ring (m)P2P icon.png1Very rare[d 4]1,535,207,358300,000
Brawling gloves (Melee).png: RS3 Giant Rock Crab drops Brawling gloves (Melee) with rarity Very rare in quantity 1Brawling gloves (Melee) (m)P2P icon.png1Very rareNot soldNot alchemisable
Brawling gloves (Magic).png: RS3 Giant Rock Crab drops Brawling gloves (Magic) with rarity Very rare in quantity 1Brawling gloves (Magic) (m)P2P icon.png1Very rareNot soldNot alchemisable
Brawling gloves (Ranged).png: RS3 Giant Rock Crab drops Brawling gloves (Ranged) with rarity Very rare in quantity 1Brawling gloves (Ranged) (m)P2P icon.png1Very rareNot soldNot alchemisable
Brawling gloves (Agility).png: RS3 Giant Rock Crab drops Brawling gloves (Agility) with rarity Very rare in quantity 1Brawling gloves (Agility) (m)P2P icon.png1Very rareNot soldNot alchemisable
Brawling gloves (Cooking).png: RS3 Giant Rock Crab drops Brawling gloves (Cooking) with rarity Very rare in quantity 1Brawling gloves (Cooking) (m)P2P icon.png1Very rareNot soldNot alchemisable
Brawling gloves (FM).png: RS3 Giant Rock Crab drops Brawling gloves (FM) with rarity Very rare in quantity 1Brawling gloves (FM) (m)P2P icon.png1Very rareNot soldNot alchemisable
Brawling gloves (Fishing).png: RS3 Giant Rock Crab drops Brawling gloves (Fishing) with rarity Very rare in quantity 1Brawling gloves (Fishing) (m)P2P icon.png1Very rareNot soldNot alchemisable
Brawling gloves (Hunter).png: RS3 Giant Rock Crab drops Brawling gloves (Hunter) with rarity Very rare in quantity 1Brawling gloves (Hunter) (m)P2P icon.png1Very rareNot soldNot alchemisable
Brawling gloves (Mining).png: RS3 Giant Rock Crab drops Brawling gloves (Mining) with rarity Very rare in quantity 1Brawling gloves (Mining) (m)P2P icon.png1Very rareNot soldNot alchemisable
Brawling gloves (Prayer).png: RS3 Giant Rock Crab drops Brawling gloves (Prayer) with rarity Very rare in quantity 1Brawling gloves (Prayer) (m)P2P icon.png1Very rareNot soldNot alchemisable
Brawling gloves (Smithing).png: RS3 Giant Rock Crab drops Brawling gloves (Smithing) with rarity Very rare in quantity 1Brawling gloves (Smithing) (m)P2P icon.png1Very rareNot soldNot alchemisable
Brawling gloves (Thieving).png: RS3 Giant Rock Crab drops Brawling gloves (Thieving) with rarity Very rare in quantity 1Brawling gloves (Thieving) (m)P2P icon.png1Very rareNot soldNot alchemisable
Brawling gloves (WC).png: RS3 Giant Rock Crab drops Brawling gloves (WC) with rarity Very rare in quantity 1Brawling gloves (WC) (m)P2P icon.png1Very rareNot soldNot alchemisable
Crystal triskelion fragment 1.png: RS3 Giant Rock Crab drops Crystal triskelion fragment 1 with rarity Very rare in quantity 1Crystal triskelion fragment 1 (m)P2P icon.png1Very rareNot soldNot alchemisable
Crystal triskelion fragment 2.png: RS3 Giant Rock Crab drops Crystal triskelion fragment 2 with rarity Very rare in quantity 1Crystal triskelion fragment 2 (m)P2P icon.png1Very rareNot soldNot alchemisable
Crystal triskelion fragment 3.png: RS3 Giant Rock Crab drops Crystal triskelion fragment 3 with rarity Very rare in quantity 1Crystal triskelion fragment 3 (m)P2P icon.png1Very rareNot soldNot alchemisable
  1. ^ Jagex. Mod Timbo's Twitter account. 19 January 2018. (Archived from the original on 22 January 2019.) Mod Timbo: "1/1280 if you hit the RDT, requires T4 luck to be worn in order to get a hold of it. Of course there are tons of different ways to access the RDT so it changes massively depending on what you're fighting, what you're wearing etc."
  2. ^ Indicates a failed 1/10 roll for Hazelmere's signet ring.
  3. ^ Indicates a roll for Hazelmere's signet ring without tier 4 luck.
  4. ^ Requires tier 4 luck. Rarer than the vecna skull.

Universal drops[edit | edit source]

Universal drops are dropped by nearly every monster outside of Daemonheim.
These items are dropped alongside main drops.

Update history[edit | edit source]

The update history project is a work-in-progress – not all updates to this topic may be covered below. See here for how to help out!
  • patch 14 January 2013 (Update):
    • Giant rock crabs found in Waterbirth Island dungeons have had their combat level reduced down to 136.
  • patch 9 November 2010 (Update):
    • Giant rock crabs no longer mysteriously grow when awakened.

Trivia[edit | edit source]

  • 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.

References[edit | edit source]