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Classic Runestone
This article is about the low-value, tradeable item found primarily while fishing. For the item that was previously called Casket, used in Treasure Trails, see Scroll box. For Treasure Trail reward caskets, see Casket (disambiguation)
Release date 27 February 2002 (Update)
Members? Yes
Quest item? No
Tradeable? Yes
Equipable? No
Stackable? No
High Alch 30 coins
Low Alch 20 coins
Destroy Drop
Store price Not sold
Exchange price 8,850 coins (info)
Buy limit 100
Examine I hope there's treasure in it.
Weight 5 kg
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Casket detail

A Casket is a wooden chest obtained primarily by big net fishing, or as drops from certain monsters. Caskets can be opened, and may contain various items, including Half keys and talismans.

Methods of obtaining casketsEdit


These caskets (found via the above methods) may contain any of the following items:

  Item Quantity Rarity GE Market Price
Coins 1000 Coins 8–3,000 2 Common Not sold
Uncut sapphire Uncut sapphire 1 2 Common 1,368
Uncut emerald Uncut emerald 1 3 Uncommon 2,997
Uncut ruby Uncut ruby 1 3 Uncommon 3,806
Uncut diamond Uncut diamond 1 4 Rare 6,277
Loop half of a key Loop half of a key 1 4 Rare 19,487
Tooth half of a key Tooth half of a key 1 4 Rare 43,434
Cosmic talisman Cosmic talisman 1 2 Common 1,490
Chaos talisman Chaos talisman 1 3 Uncommon 960
Nature talisman Nature talisman 1 4 Rare 303
Court summons Court summons 1 3 Uncommon Not sold

Dropping monsters Edit

Levels 1 to 100 Edit

Monster Combat level Quantity Rarity
Giant lobster 58,100 1 4Rare
Hobgoblin 44,50 1 5Very rare
Sea snake hatchling 90 1 2Common
Sea snake young 90 1 4Rare
Giant Sea Snake 90 1 3Uncommon

Levels 101+ Edit

Monster Combat level Quantity Rarity
Dagannoth (Chaos Tunnels) 112,114 1 3Uncommon
Dagannoth (Lighthouse) 110,112 1 3Uncommon
Dagannoth (Waterbirth Island) 112 1 4Rare
Mummy 106,110 1 4Rare
Rock Crab 102 1 4Rare
Giant Rock Crab 136 1 4Rare


These are the results from opening 500 caskets.

Item Probability GE price
20 Coins 5.6% 20
40 Coins 8.4% 40
80 Coins 9.2% 80
160 Coins 5.8% 160
320 Coins 5.2% 320
640 Coins 10.4% 640
Uncut Sapphire 23.8% 1368
Uncut Emerald 12% 2997
Uncut Ruby 7% 3806
Uncut Diamond 2.6% 6277
Cosmic Talisman 8.6% 1368
Loop half of a key 0.8% 19487
Tooth half of a key 0.6% 43434

This makes the expected value of any one chest 140.22gp, taking into account both probability and value of contents.

Other casketsEdit

You used to receive an item named 'Casket' upon completion of a Treasure Trails clue, although this was a separate, untradeable item and has since been changed. Clues now usually give a scroll box instead, except for the final clue in a trail, which gives a reward casket named 'Casket ([difficulty of clue scroll])'. For articles on Treasure Trail Reward Caskets, see Casket (disambiguation).

During the quest Pirate's Treasure, you will receive a casket unique to the quest.


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