Crystal chest

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TaverleyPrifddinas

The crystal key chest is a treasure chest located in Ivy Sophista's house in Taverley. A second chest is located in Prifddinas in the Iorwerth Clan district. The chests are locked and can only be opened by a crystal key. Attempting to open the chest without the crystal key yields the message: "This chest is securely locked shut." The crystal key is made up of a loop half of a key and a tooth half of a key; you can make the crystal key by using them with each other or selecting the "Assemble" option.

Opening a crystal chest grants a variety of rewards, which always include an uncut dragonstone. The crystal chest in Prifddinas grants slightly better rewards than the Taverley chest. The crystal key sells for more than most of the rewards, making it generally more profitable to sell the key than to use it. The key is used once and disappears upon usage.

Rewards possibilities[edit | edit source]

The chest loot always includes an uncut dragonstone, together with a random reward generated from 13 possible reward tables. Below are the values of the chest's contents, based on current Grand Exchange prices. Unless otherwise specified, all possibilities give all of the listed rewards when obtained.

After an update, wearing a ring of wealth will increase your chances of getting a better drop.

It is only possible to obtain rune platelegs if you are a male character, and a rune plateskirt if you are a female character.

Taverley chest[edit | edit source]

Possibility 1 - Fruit tree seed[edit | edit source]

The expected value of Possibility 1 is 22,246, which is a profit/loss of -11,520 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Calquat tree seed 5.pngCalquat tree seed1Common[1]99
Papaya tree seed 5.pngPapaya tree seed1Common[1]10,473
Palm tree seed 5.pngPalm tree seed1Uncommon[1]70,498
  1. ^ a b c With Possibility 1, you are guaranteed to get either a calquat tree seed, a papaya tree seed or a palm tree seed. Both the calquat and papaya tree seed have a probability of 5:11 (45.45%), and the palm tree seed has a probability of 1:11 (9%).
Possibility 2 - Lantadyme seeds[edit | edit source]

The expected value of Possibility 2 is 11,414, which is a profit/loss of -22,352 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Lantadyme seed 5.pngLantadyme seed2Common382
Possibility 3 - Grimy torstols[edit | edit source]

The expected value of Possibility 3 is 17,364, which is a profit/loss of -16,402 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Grimy torstol.pngGrimy torstol2Common6,332
Possibility 4 - Runes[edit | edit source]

The expected value of Possibility 4 is 122,332, which is a profit/loss of 88,566 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Law rune.pngLaw rune50Common18,650
Chaos rune.pngChaos rune50Common4,950
Cosmic rune.pngCosmic rune50Common20,100
Death rune.pngDeath rune50Common6,600
Nature rune.pngNature rune50Common22,000
Body rune.pngBody rune200Common7,600
Mind rune.pngMind rune200Common3,800
Earth rune.pngEarth rune200Common3,000
Air rune.pngAir rune200Common6,600
Water rune.pngWater rune200Common3,000
Fire rune.pngFire rune200Common15,000
Possibility 5 - Iron ore[edit | edit source]

The expected value of Possibility 5 is 45,632, which is a profit/loss of 11,866 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Iron ore.pngIron ore200 (noted)Common34,600
Possibility 6 - Coal[edit | edit source]

The expected value of Possibility 6 is 30,682, which is a profit/loss of -3,084 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Coal.pngCoal150 (noted)Common19,650
Possibility 7 - Rune bars[edit | edit source]

The expected value of Possibility 7 is 52,468, which is a profit/loss of 18,702 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Rune bar.pngRune bar3Common41,436
Possibility 8 - Gems[edit | edit source]

The expected value of Possibility 8 is 20,815, which is a profit/loss of -12,951 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Uncut diamond.pngUncut diamond3Common6,564
Uncut ruby.pngUncut ruby3Common3,219
Possibility 9 - Loop half of a key[edit | edit source]

The expected value of Possibility 9 is 42,729, which is a profit/loss of 8,963 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Loop half of a key.pngLoop half of a key1Common16,697
Coins 10000.pngCoins15,000Common15,000
Possibility 10 - Tooth half of a key[edit | edit source]

The expected value of Possibility 10 is 44,290, which is a profit/loss of 10,524 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Tooth half of a key.pngTooth half of a key1Common18,258
Coins 10000.pngCoins15,000Common15,000
Possibility 11 - Rune platebody[edit | edit source]

The expected value of Possibility 11 is 48,608, which is a profit/loss of 14,842 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Rune platebody.pngRune platebody1Common37,576
Possibility 12 - Rune platelegs or plateskirt[edit | edit source]

The expected value of Possibility 12 is 48,170 for male characters and 48,168 for female characters, which is a profit/loss of 14,404 for male characters and 14,402 for female characters, if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Rune platelegs.pngRune platelegs1Common[1]37,138
Rune plateskirt.pngRune plateskirt1Common[1]37,136
  1. ^ a b With Possibility 12, you are guaranteed to get either a rune platelegs or rune plateskirt. Male characters will always receive a rune platelegs, while female characters will always receive a rune plateskirt.
Possibility 13 - Dragonstone armour[edit | edit source]

The expected value of Possibility 13 is 6,372,127, which is a profit/loss of 6,338,361 if buying the crystal key on the GE.

Receiving this possibility is very rare, at a rate of 1/6801.[1]
Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Dragonstone helm.pngDragonstone helm1Very rare[2]4,966,259
Dragonstone hauberk.pngDragonstone hauberk1Very rare[2]12,258,976
Dragonstone greaves.pngDragonstone greaves1Very rare[2]5,732,394
Dragonstone gauntlets.pngDragonstone gauntlets1Very rare[2]4,323,368
Dragonstone boots.pngDragonstone boots1Very rare[2]4,524,476
  1. ^ https://twitter.com/JagexTimbo/status/557600452150579200
  2. ^ a b c d e With Possibility 13, you are guaranteed to get exactly one piece of dragonstone armour. Each piece has the same probability of being received.

Prifddinas chest[edit | edit source]

This chest was released with the first part of Prifddinas on 22 September 2014, and is located in the Iorwerth Manor against the south wall. It has an improved drop table over the chest in Taverley. At the least, the player should still wear a Ring of wealth when opening either crystal chest.

Possibility 1 - Tree seeds[edit | edit source]

The expected value of Possibility 1 is 37,240.8, which is a profit/loss of 3,474.8 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Yew seed 5.pngYew seed1Common19,189
Papaya tree seed 5.pngPapaya tree seed1Common10,473
Elder seed 5.pngElder seed1Uncommon71,720
Possibility 2 - Herb seeds[edit | edit source]

The expected value of Possibility 2 is 12,797, which is a profit/loss of -20,969 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Dwarf weed seed 5.pngDwarf weed seed1Common357
Torstol seed 5.pngTorstol seed2Common1,408
Possibility 3[edit | edit source]

The expected value of Possibility 3 is 26,622, which is a profit/loss of -7,144 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Grimy lantadyme.pngGrimy lantadyme5Common15,590
Crystal tree blossom.pngCrystal tree blossom1CommonNot sold
Possibility 4 - Talismans[edit | edit source]

The expected value of Possibility 4 is 37,077, which is a profit/loss of 3,311 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Fire talisman.pngFire talisman(noted)Common10,225
Water talisman.pngWater talisman(noted)Common15,820
Possibility 5 - Rune Halberd[edit | edit source]

The expected value of Possibility 5 is 86,048, which is a profit/loss of 52,282 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Rune halberd.pngRune halberd1Common75,016
Possibility 6 - Ores[edit | edit source]

The expected value of Possibility 6 is 37,252, which is a profit/loss of 3,486 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Coal.pngCoal80 (noted)Common10,480
Adamantite ore.pngAdamantite ore10 (noted)Common15,740
Corrupted ore.pngCorrupted ore50CommonNot sold
Possibility 7 - Rune bars[edit | edit source]

The expected value of Possibility 7 is 52,468, which is a profit/loss of 18,702 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Rune bar.pngRune bar3Common41,436
Possibility 8 - Uncut gems[edit | edit source]

The expected value of Possibility 8 is 20,815, which is a profit/loss of -12,951 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Uncut diamond.pngUncut diamond3Common6,564
Uncut ruby.pngUncut ruby3Common3,219
Possibility 9 - Loop half of a key[edit | edit source]

The expected value of Possibility 9 is 27,729, which is a profit/loss of -6,037 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Loop half of a key.pngLoop half of a key1Common16,697
Crystal motherlode shard.pngCrystal motherlode shard10CommonNot sold
Possibility 10 - Tooth half of a key[edit | edit source]

The expected value of Possibility 10 is 29,290, which is a profit/loss of -4,476 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Tooth half of a key.pngTooth half of a key1Common18,258
Crystal motherlode shard.pngCrystal motherlode shard10CommonNot sold
Possibility 11 - Rune armour[edit | edit source]

The expected value of Possibility 11 is 62,077, which is a profit/loss of 28,311 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Rune full helm.pngRune full helm1Common19,817
Rune kiteshield.pngRune kiteshield1Common31,228
Possibility 12 - Rune platelegs or plateskirt[edit | edit source]

The expected value of Possibility 12 is 48,170 for male characters and 48,168 for female characters, which is a profit/loss of 14,404 for male characters and 14,402 for female characters, if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Rune platelegs.pngRune platelegs1Common[1]37,138
Rune plateskirt.pngRune plateskirt1Common[1]37,136
  1. ^ a b With Possibility 12, you are guaranteed to get either a rune platelegs or rune plateskirt. Male characters will always receive a rune platelegs, while female characters will always receive a rune plateskirt.
Possibility 13 - Dragonstone armour[edit | edit source]

The expected value of Possibility 13 is 6,372,127, which is a profit/loss of 6,338,361 if buying the crystal key on the GE.

Receiving this possibility is very rare, at a rate of 1/6801.[1]
Item Quantity Rarity GE price
Uncut dragonstone.pngUncut dragonstone1Always11,032
Dragonstone helm.pngDragonstone helm1Very rare[2]4,966,259
Dragonstone hauberk.pngDragonstone hauberk1Very rare[2]12,258,976
Dragonstone greaves.pngDragonstone greaves1Very rare[2]5,732,394
Dragonstone gauntlets.pngDragonstone gauntlets1Very rare[2]4,323,368
Dragonstone boots.pngDragonstone boots1Very rare[2]4,524,476
  1. ^ https://twitter.com/JagexTimbo/status/557600452150579200
  2. ^ a b c d e With Possibility 13, you are guaranteed to get exactly one piece of dragonstone armour. Each piece has the same probability of being received.

Probabilities[edit | edit source]

Taverley chest[edit | edit source]

The probabilities in this section are an estimation based on the data of 1000 crystal chest loots on the Taverley chest, while wearing a luck of the dwarves.
Possibility Percentage
Possibility 1: Fruit tree seed 6.4%[notes 1]
Possibility 2: Lantadyme seeds 7.9%
Possibility 3: Grimy torstols 9.4%
Possibility 4: Runes 10%
Possibility 5: Iron ore 9.1%
Possibility 6: Coal 9.8%
Possibility 7: Rune bars 9.4%
Possibility 8: Gems 8.3%
Possibility 9: Loop half of a key 7.4%
Possibility 10: Tooth half of a key 6.8%
Possibility 11: Rune platebody 7.2%
Possibility 12: Rune platelegs or plateskirt 8.3%
Possibility 13: Dragonstone armour < 0.01%
  1. ^ The official RuneScape wiki lists the probability of receiving a calquat or papaya tree seed at 5:11 (45.45%) each and the probability of receiving a palm tree seed at 1:11 (9%). This data shows a probability of 48.45% for the calquat, 42.18% for the papaya, and 9.37% for the palm tree seed.

Using these probabilities, the expected average profit/loss, per crystal key, when looting the crystal chest is 9,915. Assuming you will receive whichever of the rune platelegs and rune plateskirt is worth more, and the crystal key is bought at GE price. This is excluding the possibility of receiving a dragonstone armour piece, as this possibility is much too rare to estimate with any acceptable accuracy.

Prifddinas chest[edit | edit source]

The probabilities in this section are an estimation based on the data of 20,000 loots of the Prifddinas crystal chest while wearing luck of the dwarves. The loot from the Prifddinas chest is not affected by the Voice of Seren.[1]
Possibility Percentage
Possibility 1: Tree seeds 7.59%
Possibility 2: Herb seeds 7.555%
Possibility 3: Grimy lantadymes 4.47%
Possibility 4: Talismans 7.545%
Possibility 5: Rune Halberd 6.00%
Possibility 6: Ores 10.36%
Possibility 7: Rune bars 9.455%
Possibility 8: Gems 9.525%
Possibility 9: Loop half of a key 9.30%
Possibility 10: Tooth half of a key 9.045%
Possibility 11: Rune full helm and rune kiteshield 8.81%
Possibility 12: Rune platelegs or plateskirt 10.34%
Possibility 13: Dragonstone armour < 0.01%

Using these probabilities, the expected average profit/loss, per crystal key, when looting the crystal chest is 5,658. Assuming you will receive rune platelegs, the crystal key is bought at GE price and the luck of the dwarves ring is worn. This is excluding the possibility of receiving a dragonstone armour piece, as this possibility is much too rare to estimate with any acceptable accuracy.

Estimate probabilities for non-guaranteed loot are:

  • 17.785% chance of crystal motherlode shard when rolling possibility 9 or 10. This assumes that possibility 9 and 10 yield the same chance for crystal motherlode shards.
  • 8.675% chance of receiving elder seed when rolling possibility 1.
  • 63.385% chance of receiving papaya tree seed when rolling possibility 1.
  • 27.94% chance of receiving yew seed when rolling possibility 1.
  • 20.39% chance of receiving dwarf weed seed when rolling possibility 2.
  • 79.61% chance of receiving torstol seed when rolling possibility 2.

Trivia[edit | edit source]

  • The crystal key chest was reworked on 11 June 2013 with the release of the Triskelion Treasures. Previous old drops, such as receiving 2,000 coins and a Spinach roll along with an Uncut dragonstone, were removed, and new ones were added, such as the Dragonstone armour.
  • The estimated dragonstone armour possibility chance is about 0.0147%.

References[edit | edit source]

  1. ^ Mod Hunter. 10K crystal chests VoS vs. no VoS. 2017-06-29. "If nothing else all of your testing has at least gained mod confirmation that there isn't - and has never been - any impact from the VoS on the crystal chest."*
Facts about "Crystal chest"
Drop JSON{ "name": "Uncut dragonstone", "quantity": [1,1], "rarity": "Always" } +, { "name": "Calquat tree seed", "quantity": [1,1], "rarity": "Common" } +, { "name": "Papaya tree seed", "quantity": [1,1], "rarity": "Common" } +, { "name": "Palm tree seed", "quantity": [1,1], "rarity": "Uncommon" } +, { "name": "Lantadyme seed", "quantity": [2,2], "rarity": "Common" } +, { "name": "Grimy torstol", "quantity": [2,2], "rarity": "Common" } +, { "name": "Law rune", "quantity": [50,50], "rarity": "Common" } +, { "name": "Chaos rune", "quantity": [50,50], "rarity": "Common" } +, { "name": "Cosmic rune", "quantity": [50,50], "rarity": "Common" } +, { "name": "Death rune", "quantity": [50,50], "rarity": "Common" } +, { "name": "Nature rune", "quantity": [50,50], "rarity": "Common" } +, { "name": "Body rune", "quantity": [200,200], "rarity": "Common" } +, { "name": "Mind rune", "quantity": [200,200], "rarity": "Common" } +, { "name": "Earth rune", "quantity": [200,200], "rarity": "Common" } +, { "name": "Air rune", "quantity": [200,200], "rarity": "Common" } +, { "name": "Water rune", "quantity": [200,200], "rarity": "Common" } +, { "name": "Fire rune", "quantity": [200,200], "rarity": "Common" } +, { "name": "Iron ore", "quantity": [200,200], "rarity": "Common" } +, { "name": "Coal", "quantity": [150,150], "rarity": "Common" } +, { "name": "Rune bar", "quantity": [3,3], "rarity": "Common" } +, { "name": "Uncut diamond", "quantity": [3,3], "rarity": "Common" } +, { "name": "Uncut ruby", "quantity": [3,3], "rarity": "Common" } +, { "name": "Loop half of a key", "quantity": [1,1], "rarity": "Common" } +, { "name": "Coins", "quantity": [15000,15000], "rarity": "Common" } +, { "name": "Tooth half of a key", "quantity": [1,1], "rarity": "Common" } +, { "name": "Rune platebody", "quantity": [1,1], "rarity": "Common" } +, { "name": "Rune platelegs", "quantity": [1,1], "rarity": "Common" } +, { "name": "Rune plateskirt", "quantity": [1,1], "rarity": "Common" } +, { "name": "Dragonstone helm", "quantity": [1,1], "rarity": "Very rare" } +, { "name": "Dragonstone hauberk", "quantity": [1,1], "rarity": "Very rare" } +, { "name": "Dragonstone greaves", "quantity": [1,1], "rarity": "Very rare" } +, { "name": "Dragonstone gauntlets", "quantity": [1,1], "rarity": "Very rare" } +, { "name": "Dragonstone boots", "quantity": [1,1], "rarity": "Very rare" } +, { "name": "Yew seed", "quantity": [1,1], "rarity": "Common" } +, { "name": "Elder seed", "quantity": [1,1], "rarity": "Uncommon" } +, { "name": "Dwarf weed seed", "quantity": [1,1], "rarity": "Common" } +, { "name": "Torstol seed", "quantity": [2,2], "rarity": "Common" } +, { "name": "Grimy lantadyme", "quantity": [5,5], "rarity": "Common" } +, { "name": "Crystal tree blossom", "quantity": [1,1], "rarity": "Common" } +, { "name": "Fire talisman", "quantity": [5,5], "rarity": "Common" } +, { "name": "Water talisman", "quantity": [2,2], "rarity": "Common" } +, { "name": "Rune halberd", "quantity": [1,1], "rarity": "Common" } +, { "name": "Coal", "quantity": [80,80], "rarity": "Common" } +, { "name": "Adamantite ore", "quantity": [10,10], "rarity": "Common" } +, { "name": "Corrupted ore", "quantity": [50,50], "rarity": "Common" } +, { "name": "Crystal motherlode shard", "quantity": [10,10], "rarity": "Common" } +, { "name": "Rune full helm", "quantity": [1,1], "rarity": "Common" } + and { "name": "Rune kiteshield", "quantity": [1,1], "rarity": "Common" } +
Drops itemUncut dragonstone +, Calquat tree seed +, Papaya tree seed +, Palm tree seed +, Lantadyme seed +, Grimy torstol +, Law rune +, Chaos rune +, Cosmic rune +, Death rune +, Nature rune +, Body rune +, Mind rune +, Earth rune +, Air rune +, Water rune +, Fire rune +, Iron ore +, Coal +, Rune bar +, Uncut diamond +, Uncut ruby +, Loop half of a key +, Coins +, Tooth half of a key +, Rune platebody +, Rune platelegs +, Rune plateskirt +, Dragonstone helm +, Dragonstone hauberk +, Dragonstone greaves +, Dragonstone gauntlets +, Dragonstone boots +, Yew seed +, Elder seed +, Dwarf weed seed +, Torstol seed +, Grimy lantadyme +, Crystal tree blossom +, Fire talisman +, Water talisman +, Rune halberd +, Adamantite ore +, Corrupted ore +, Crystal motherlode shard +, Rune full helm + and Rune kiteshield +