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Crystal chest

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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 more monetarily satisfying to sell the key. When the key is used it disappears, so opening the chest is a gamble.

Rewards possibilitiesEdit

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.

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 female character.

It is a common misconception that you can obtain crystal weapons from the chest. The chest does not contain any of these items, as they are a quest reward.

Taverley chestEdit

Possibility 1 - Fruit tree seedEdit

The expected value of Possibility 1 is 43,265, which is a profit/loss of 1,253 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Calquat tree seed 5Calquat tree seed1Common[1]14,821
Papaya tree seed 5Papaya tree seed1Common[1]32,452
Palm tree seed 5Palm tree seed1Common[1]102,825
  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 seedsEdit

The expected value of Possibility 2 is 14,334, which is a profit/loss of -27,678 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Lantadyme seed 5Lantadyme seed2Always1,904
Possibility 3 - Grimy torstolsEdit

The expected value of Possibility 3 is 21,684, which is a profit/loss of -20,328 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Grimy torstolGrimy torstol2Always9,254
Possibility 4 - RunesEdit

The expected value of Possibility 4 is 105,280, which is a profit/loss of 63,268 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Law runeLaw rune50Always10,000
Chaos runeChaos rune50Always3,500
Cosmic runeCosmic rune50Always17,300
Death runeDeath rune50Always9,450
Nature runeNature rune50Always19,000
Body runeBody rune200Always7,800
Mind runeMind rune200Always2,600
Earth runeEarth rune200Always2,000
Air runeAir rune200Always4,200
Water runeWater rune200Always2,200
Fire runeFire rune200Always14,800
Possibility 5 - Iron oreEdit

The expected value of Possibility 5 is 77,430, which is a profit/loss of 35,418 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Iron oreIron ore200 (noted)Always65,000
Possibility 6 - CoalEdit

The expected value of Possibility 6 is 41,530, which is a profit/loss of -482 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
CoalCoal150 (noted)Always29,100
Possibility 7 - Rune barsEdit

The expected value of Possibility 7 is 53,596, which is a profit/loss of 11,584 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Rune barRune bar3Always41,166
Possibility 8 - GemsEdit

The expected value of Possibility 8 is 32,710, which is a profit/loss of -9,302 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Uncut diamondUncut diamond3Always11,085
Uncut rubyUncut ruby3Always9,195
Possibility 9 - Loop half of a keyEdit

The expected value of Possibility 9 is 43,211, which is a profit/loss of 1,199 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Loop half of a keyLoop half of a key1Always15,781
Coins 10000Coins15,000Always15,000
Possibility 10 - Tooth half of a keyEdit

The expected value of Possibility 10 is 53,556, which is a profit/loss of 11,544 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Tooth half of a keyTooth half of a key1Always26,126
Coins 10000Coins15,000Always15,000
Possibility 11 - Rune platebodyEdit

The expected value of Possibility 11 is 49,152, which is a profit/loss of 7,140 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Rune platebodyRune platebody1Always36,722
Possibility 12 - Rune platelegs or plateskirtEdit

The expected value of Possibility 12 is 48,638 for male characters and 48,862 for female characters, which is a profit/loss of 6,626 for male characters and 6,850 for female characters, if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Rune platelegsRune platelegs1Common[1]36,208
Rune plateskirtRune plateskirt1Common[1]36,432
  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 armourEdit

The expected value of Possibility 13 is 5,841,437, which is a profit/loss of 5,799,425 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 dragonstoneUncut dragonstone1Always12,430
Dragonstone helmDragonstone helm1Common[2]4,437,152
Dragonstone hauberkDragonstone hauberk1Common[2]10,138,453
Dragonstone greavesDragonstone greaves1Common[2]5,041,857
Dragonstone gauntletsDragonstone gauntlets1Common[2]3,941,614
Dragonstone bootsDragonstone boots1Common[2]5,585,959
  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 chestEdit

Crystal chest (Prifddinas)
Crystal chest (Prifddinas) location

Prifddinas chest location.

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. While the Voice of Seren is active for the Iorwerth clan, the chest provides an increased chance of Prifddinas-related items looted, including: corrupted ore, Crystal tree blossoms, and Crystal motherlode shards. At the least, the player should still wear a Ring of wealth when opening either crystal chest.

Possibility 1Edit

The expected value of Possibility 1 is 31,000, which is a profit/loss of -11,012 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Grimy lantadymeGrimy lantadyme5Always18,570
Crystal tree blossomCrystal tree blossom1AlwaysNot sold
Possibility 2 - Tree seedsEdit

The expected value of Possibility 2 is 228,289, which is a profit/loss of 186,277 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Yew seed 5Yew seed1Common29,092
Papaya tree seed 5Papaya tree seed1Common32,452
Elder seed 5Elder seed1Uncommon154,315
Possibility 3 - Tooth half of a keyEdit

The expected value of Possibility 3 is 38,556, which is a profit/loss of -3,456 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Tooth half of a keyTooth half of a key1Always26,126
Crystal motherlode shardCrystal motherlode shard10CommonNot sold
Possibility 4 - Loop half of a keyEdit

The expected value of Possibility 4 is 28,211, which is a profit/loss of -13,801 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Loop half of a keyLoop half of a key1Always15,781
Crystal motherlode shardCrystal motherlode shard10CommonNot sold
Possibility 5 - Herb seedsEdit

The expected value of Possibility 5 is 19,249, which is a profit/loss of -22,763 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Dwarf weed seed 5Dwarf weed seed1Common937
Torstol seed 5Torstol seed2Common5,882
Possibility 6 - OresEdit

The expected value of Possibility 6 is 35,220, which is a profit/loss of -6,792 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
CoalCoal80 (noted)Always15,520
Adamantite oreAdamantite ore10 (noted)Always7,270
Corrupted oreCorrupted ore50AlwaysNot sold
Possibility 7 - Rune HalberdEdit

The expected value of Possibility 7 is 87,691, which is a profit/loss of 45,679 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Rune halberdRune halberd1Always75,261
Possibility 8 - Rune armourEdit

The expected value of Possibility 8 is 62,534, which is a profit/loss of 20,522 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Rune full helmRune full helm1Always19,231
Rune kiteshieldRune kiteshield1Always30,873
Possibility 9 - Rune platelegs or plateskirtEdit

The expected value of Possibility 9 is 48,638 for male characters and 48,862 for female characters, which is a profit/loss of 6,626 for male characters and 6,850 for female characters, if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Rune platelegsRune platelegs1Common[1]36,208
Rune plateskirtRune plateskirt1Common[1]36,432
  1. ^ a b With Possibility 9, 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 10 - Rune barsEdit

The expected value of Possibility 10 is 53,596, which is a profit/loss of 11,584 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Rune barRune bar3Always41,166
Possibility 11 - TalismansEdit

The expected value of Possibility 11 is 34,644, which is a profit/loss of -7,368 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Fire talismanFire talisman(noted)Always8,580
Water talismanWater talisman(noted)Always13,634
Possibility 12 - Uncut gemsEdit

The expected value of Possibility 12 is 32,710, which is a profit/loss of -9,302 if buying the crystal key on the GE.

Item Quantity Rarity GE price
Uncut dragonstoneUncut dragonstone1Always12,430
Uncut diamondUncut diamond3Always11,085
Uncut rubyUncut ruby3Always9,195
Possibility 13 - Dragonstone armourEdit

The expected value of Possibility 13 is 5,841,437, which is a profit/loss of 5,799,425 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 dragonstoneUncut dragonstone1Always12,430
Dragonstone helmDragonstone helm1Common[2]4,437,152
Dragonstone hauberkDragonstone hauberk1Common[2]10,138,453
Dragonstone greavesDragonstone greaves1Common[2]5,041,857
Dragonstone gauntletsDragonstone gauntlets1Common[2]3,941,614
Dragonstone bootsDragonstone boots1Common[2]5,585,959
  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.

ProbabilitiesEdit

Taverley chestEdit

The probabilities in this section are an estimation based on the data of 1134 crystal chest loots on the Taverley chest, while wearing a ring of wealth.
Possibility Percentage
Possibility 1: Fruit tree seed 8.02%[1]
Possibility 2: Lantadyme seeds 9.61%
Possibility 3: Grimy torstols 9.96%
Possibility 4: Runes 7.5%
Possibility 5: Iron ore 8.47%
Possibility 6: Coal 9.17%
Possibility 7: Rune bars 9.61%
Possibility 8: Gems 9.61%
Possibility 9: Loop half of a key 7.94%
Possibility 10: Tooth half of a key 6.61%
Possibility 11: Rune platebody 5.03%
Possibility 12: Rune platelegs or plateskirt 8.47%
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 49.45% for the calquat, 47.25% for the papaya, and 3.30% for the palm tree seed.

Using these probabilities, the expected average profit/loss, per crystal key, when looting the crystal chest is 5,134. (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.

TriviaEdit

Facts about "Crystal chest"RDF feed
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": "Common" }, { "name": "Lantadyme seed", "quantity": [2,2], "rarity": "Always" }, { "name": "Grimy torstol", "quantity": [2,2], "rarity": "Always" }, { "name": "Law rune", "quantity": [50,50], "rarity": "Always" }, { "name": "Chaos rune", "quantity": [50,50], "rarity": "Always" }, { "name": "Cosmic rune", "quantity": [50,50], "rarity": "Always" }, { "name": "Death rune", "quantity": [50,50], "rarity": "Always" }, { "name": "Nature rune", "quantity": [50,50], "rarity": "Always" }, { "name": "Body rune", "quantity": [200,200], "rarity": "Always" }, { "name": "Mind rune", "quantity": [200,200], "rarity": "Always" }, { "name": "Earth rune", "quantity": [200,200], "rarity": "Always" }, { "name": "Air rune", "quantity": [200,200], "rarity": "Always" }, { "name": "Water rune", "quantity": [200,200], "rarity": "Always" }, { "name": "Fire rune", "quantity": [200,200], "rarity": "Always" }, { "name": "Iron ore", "quantity": [200,200], "rarity": "Always" }, { "name": "Coal", "quantity": [150,150], "rarity": "Always" }, { "name": "Rune bar", "quantity": [3,3], "rarity": "Always" }, { "name": "Uncut diamond", "quantity": [3,3], "rarity": "Always" }, { "name": "Uncut ruby", "quantity": [3,3], "rarity": "Always" }, { "name": "Loop half of a key", "quantity": [1,1], "rarity": "Always" }, { "name": "Coins", "quantity": [15000,15000], "rarity": "Always" }, { "name": "Tooth half of a key", "quantity": [1,1], "rarity": "Always" }, { "name": "Rune platebody", "quantity": [1,1], "rarity": "Always" }, { "name": "Rune platelegs", "quantity": [1,1], "rarity": "Common" }, { "name": "Rune plateskirt", "quantity": [1,1], "rarity": "Common" }, { "name": "Dragonstone helm", "quantity": [1,1], "rarity": "Common" }, { "name": "Dragonstone hauberk", "quantity": [1,1], "rarity": "Common" }, { "name": "Dragonstone greaves", "quantity": [1,1], "rarity": "Common" }, { "name": "Dragonstone gauntlets", "quantity": [1,1], "rarity": "Common" }, { "name": "Dragonstone boots", "quantity": [1,1], "rarity": "Common" }, { "name": "Grimy lantadyme", "quantity": [5,5], "rarity": "Always" }, { "name": "Crystal tree blossom", "quantity": [1,1], "rarity": "Always" }, { "name": "Yew seed", "quantity": [1,1], "rarity": "Common" }, { "name": "Elder seed", "quantity": [1,1], "rarity": "Uncommon" }, { "name": "Crystal motherlode shard", "quantity": [10,10], "rarity": "Common" }, { "name": "Dwarf weed seed", "quantity": [1,1], "rarity": "Common" }, { "name": "Torstol seed", "quantity": [2,2], "rarity": "Common" }, { "name": "Coal", "quantity": [80,80], "rarity": "Always" }, { "name": "Adamantite ore", "quantity": [10,10], "rarity": "Always" }, { "name": "Corrupted ore", "quantity": [50,50], "rarity": "Always" }, { "name": "Rune halberd", "quantity": [1,1], "rarity": "Always" }, { "name": "Rune full helm", "quantity": [1,1], "rarity": "Always" }, { "name": "Rune kiteshield", "quantity": [1,1], "rarity": "Always" }, { "name": "Fire talisman", "quantity": [5,5], "rarity": "Always" } and { "name": "Water talisman", "quantity": [2,2], "rarity": "Always" }
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 +, Grimy lantadyme +, Crystal tree blossom +, Yew seed +, Elder seed +, Crystal motherlode shard +, Dwarf weed seed +, Torstol seed +, Adamantite ore +, Corrupted ore +, Rune halberd +, Rune full helm +, Rune kiteshield +, Fire talisman + and Water talisman +

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