Brimstone chest

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ClosedOpened

The Brimstone chest can be found next to Konar quo Maten on Mount Karuulm. The chest is locked and can only be opened by using a brimstone key, which is obtained from killing monsters that Konar assigns the player.

The exact odds of receiving the key are 1/100 for level 100 monsters and 1/50 for level 350 monsters, scaling linearly and capping at 350 (-0.2 * lvl + 120).[1] For lower level monsters, it follows a curve (0.2 * (lvl - 100) ^ 2 + 100).[2]

Possible loot[edit | edit source]

The brimstone chest usually contains generic loot meant as a slight increase to the player's profits. There is also a rare chance of getting a broken dragon hasta, which can be repaired, for free, by simply showing it to Otto Godblessed (Barbarian Training in Smithing is not required for this). There's also a slim chance of obtaining pieces of the dusk mystic robe set, which come with a colour scheme similar to that of Mount Karuulm.

The average value of a drop from this table is 99,115.41.[3]

Item Quantity Rarity Price High Alch
Uncut diamond.png: Brimstone chest drops Uncut diamond with rarity 1/12 in quantity 25-35 (noted)Uncut diamond25–35 (noted)1/1269,825-97,7553,000-4,200
Uncut ruby.png: Brimstone chest drops Uncut ruby with rarity 1/12 in quantity 25-35 (noted)Uncut ruby25–35 (noted)1/1233,725-47,2151,500-2,100
Coal.png: Brimstone chest drops Coal with rarity 1/12 in quantity 300-500 (noted)Coal300–500 (noted)1/1242,000-70,0008,100-13,500
Coins_10000.png: Brimstone chest drops Coins with rarity 1/12 in quantity 50000-150000Coins50,000–150,0001/1250,000-150,00050,000-150,000
Gold ore.png: Brimstone chest drops Gold ore with rarity 1/15 in quantity 100-200 (noted)Gold ore100–200 (noted)1/1526,400-52,8009,000-18,000
Dragon arrowtips.png: Brimstone chest drops Dragon arrowtips with rarity 1/15 in quantity 50-200Dragon arrowtips50–2001/1528,450-113,80015,000-60,000
Iron ore.png: Brimstone chest drops Iron ore with rarity 1/20 in quantity 350-500 (noted)Iron ore350–500 (noted)1/2026,950-38,5003,500-5,000
Rune full helm.png: Brimstone chest drops Rune full helm with rarity 1/20 in quantity 2-4 (noted)Rune full helm2–4 (noted)1/2041,240-82,48042,240-84,480
Rune platebody.png: Brimstone chest drops Rune platebody with rarity 1/20 in quantity 1-2 (noted)Rune platebody1–2 (noted)1/2038,505-77,01039,000-78,000
Rune platelegs.png: Brimstone chest drops Rune platelegs with rarity 1/20 in quantity 1-2 (noted)Rune platelegs1–2 (noted)1/2037,871-75,74238,400-76,800
Raw tuna.png: Brimstone chest drops Raw tuna with rarity 1/20 in quantity 100-350 (noted)Raw tuna[A 1]100–350 (noted)1/206,000-21,0002,400-8,400
Raw lobster.png: Brimstone chest drops Raw lobster with rarity 1/20 in quantity 100-350 (noted)Raw lobster[A 1]100–350 (noted)1/2012,500-43,7504,200-14,700
Raw swordfish.png: Brimstone chest drops Raw swordfish with rarity 1/20 in quantity 100-300 (noted)Raw swordfish[A 1]100–300 (noted)1/2020,900-62,7004,800-14,400
Raw monkfish.png: Brimstone chest drops Raw monkfish with rarity 1/20 in quantity 100-300 (noted)Raw monkfish[A 1]100–300 (noted)1/2028,800-86,40013,800-41,400
Raw shark.png: Brimstone chest drops Raw shark with rarity 1/20 in quantity 100-250 (noted)Raw shark[A 1]100–250 (noted)1/2080,000-200,00010,200-25,500
Raw sea turtle.png: Brimstone chest drops Raw sea turtle with rarity 1/20 in quantity 80-200 (noted)Raw sea turtle[A 1]80–200 (noted)1/2064,400-161,0009,600-24,000
Raw manta ray.png: Brimstone chest drops Raw manta ray with rarity 1/20 in quantity 80-160 (noted)Raw manta ray[A 1]80–160 (noted)1/2082,080-164,1609,600-19,200
Runite ore.png: Brimstone chest drops Runite ore with rarity 1/30 in quantity 10-15 (noted)Runite ore10–15 (noted)1/30112,490-168,73519,200-28,800
Steel bar.png: Brimstone chest drops Steel bar with rarity 1/30 in quantity 300-500 (noted)Steel bar300–500 (noted)1/30114,600-191,00018,000-30,000
Magic logs.png: Brimstone chest drops Magic logs with rarity 1/30 in quantity 120-160 (noted)Magic logs120–160 (noted)1/30116,760-155,68023,040-30,720
Dragon dart tip.png: Brimstone chest drops Dragon dart tip with rarity 1/30 in quantity 40-160Dragon dart tip40–1601/30112,280-449,1206,000-24,000
Palm tree seed.png: Brimstone chest drops Palm tree seed with rarity 1/60 in quantity 2-4Palm tree seed2–41/60100,878-201,756304-608
Magic seed.png: Brimstone chest drops Magic seed with rarity 1/60 in quantity 2-3Magic seed2–31/60280,762-421,143506-759
Celastrus seed.png: Brimstone chest drops Celastrus seed with rarity 1/60 in quantity 2-4Celastrus seed2–41/60178,434-356,868648-1,296
Dragonfruit tree seed.png: Brimstone chest drops Dragonfruit tree seed with rarity 1/60 in quantity 2-4Dragonfruit tree seed2–41/60339,952-679,904516-1,032
Redwood tree seed.png: Brimstone chest drops Redwood tree seed with rarity 1/60 in quantity 1Redwood tree seed11/6031,395390
Torstol seed.png: Brimstone chest drops Torstol seed with rarity 1/60 in quantity 3-5Torstol seed3–51/60167,424-279,040126-210
Snapdragon seed.png: Brimstone chest drops Snapdragon seed with rarity 1/60 in quantity 3-5Snapdragon seed3–51/60199,278-332,130108-180
Ranarr seed.png: Brimstone chest drops Ranarr seed with rarity 1/60 in quantity 3-5Ranarr seed3–51/60151,986-253,31090-150
Pure essence.png: Brimstone chest drops Pure essence with rarity 1/60 in quantity 3000-6000 (noted)Pure essence3,000–6,000 (noted)1/606,000-12,0006,000-12,000
Broken dragon hasta.png: Brimstone chest drops Broken dragon hasta with rarity 1/200 in quantity 1Broken dragon hasta11/20036,64337,440
Mystic hat (dusk).png: Brimstone chest drops Mystic hat (dusk) with rarity 1/1,000 in quantity 1Mystic hat (dusk)11/1,00044,8999,000
Mystic robe top (dusk).png: Brimstone chest drops Mystic robe top (dusk) with rarity 1/1,000 in quantity 1Mystic robe top (dusk)11/1,000198,64072,000
Mystic robe bottom (dusk).png: Brimstone chest drops Mystic robe bottom (dusk) with rarity 1/1,000 in quantity 1Mystic robe bottom (dusk)11/1,000218,95848,000
Mystic gloves (dusk).png: Brimstone chest drops Mystic gloves (dusk) with rarity 1/1,000 in quantity 1Mystic gloves (dusk)11/1,00037,0846,000
Mystic boots (dusk).png: Brimstone chest drops Mystic boots (dusk) with rarity 1/1,000 in quantity 1Mystic boots (dusk)11/1,00092,2316,000
  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 The type of raw fish obtained is dependent on the player's Fishing level. The chance of rolling the fish drop is 1/20, after which the type is determined.

Changes[edit | edit source]

Date Changes
14 March 2019
(update | poll)
The brimstone chest now tracks the amount of times the player has opened it.
21 February 2019
(update)
Loot obtained from the chest is now broadcasted in the chatbox to players within the vicinity.

Trivia[edit | edit source]

  • Several items can be seen inside the brimstone chest while it is open, including piles of coins, stacks of banknotes, rubies, and vials of a yellow potion. This is of course a reference to the loot players can receive from the chest.
  • The drop table contents found when opening a brimstone chest had seen several changes before the chest was introduced.

References[edit | edit source]

  1. Jagex. Mod Kieren's Twitter account. 16 January 2019. Mod Kieren: "It follows a curve up until level 100 then scales linearly between those 2 values upto level 350 combat. Creatures over thsi[sic] will cap at 1/50. [1]"
  2. Jagex. Mod Kieren's Twitter account. 16 January 2019. Mod Kieren: "0.2*(CBLEVEL - 100)^2 + 100"
  3. The Old School Team. "Revised Post Kebos Poll Blog". 21 January 2019. Developers' Blogs. *