Changes: Crystal chest

**Crystal chest**
Release date	22 September 2014 (Update)
Members	Yes
Quest	Plague's End
Location	Prifddinas
Examine	A crystal key can open it.;

**Crystal chest**
Release date	27 February 2002 (Update)
Members	Yes
Quest	No
Location	Taverley
Examine	A crystal key can open it.;

Revision as of 15:18, 3 March 2019

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TaverleyPrifddinas

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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 generally more profitable to sell the key than to use it. The key is used once and disappears upon usage.

Rewards possibilities

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

Possibility 1 - Fruit tree seed

The expected value of Possibility 1 is 17,139, which is a profit/loss of −4,672 if buying the crystal key on the GE.

Item	Quantity	Rarity	GE price
Uncut dragonstone	1	Always	12,077
Calquat tree seed	1	Common^[1]	321
Papaya tree seed	1	Common^[1]	2,896
Palm tree seed	1	Uncommon^[1]	39,600

^ ^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

The expected value of Possibility 2 is 13,529, which is a profit/loss of −8,282 if buying the crystal key on the GE.

	Item	Quantity	Rarity	GE price
	Uncut dragonstone	1	Always	12,077
	Lantadyme seed	2	Common	1,452

Possibility 3 - Grimy torstols

The expected value of Possibility 3 is 22,855, which is a profit/loss of 1,044 if buying the crystal key on the GE.

	Item	Quantity	Rarity	GE price
	Uncut dragonstone	1	Always	12,077
	Grimy torstol	2	Common	10,778

Possibility 4 - Runes

The expected value of Possibility 4 is 172,427, which is a profit/loss of 150,616 if buying the crystal key on the GE.

Item	Quantity	Rarity	GE price
Uncut dragonstone	1	Always	12,077
Law rune	50	Common	28,500
Chaos rune	50	Common	7,600
Cosmic rune	50	Common	20,600
Death rune	50	Common	11,600
Nature rune	50	Common	20,250
Body rune	200	Common	9,600
Mind rune	200	Common	3,800
Earth rune	200	Common	3,600
Air rune	200	Common	18,000
Water rune	200	Common	5,000
Fire rune	200	Common	31,800

Possibility 5 - Iron ore

The expected value of Possibility 5 is 101,877, which is a profit/loss of 80,066 if buying the crystal key on the GE.

	Item	Quantity	Rarity	GE price
	Uncut dragonstone	1	Always	12,077
	Iron ore	200 (noted)	Common	89,800

Possibility 6 - Coal

The expected value of Possibility 6 is 28,877, which is a profit/loss of 7,066 if buying the crystal key on the GE.

	Item	Quantity	Rarity	GE price
	Uncut dragonstone	1	Always	12,077
	Coal	150 (noted)	Common	16,800

Possibility 7 - Rune bars

The expected value of Possibility 7 is 21,032, which is a profit/loss of −779 if buying the crystal key on the GE.

	Item	Quantity	Rarity	GE price
	Uncut dragonstone	1	Always	12,077
	Rune bar	3	Common	8,955

Possibility 8 - Gems

The expected value of Possibility 8 is 32,132, which is a profit/loss of 10,321 if buying the crystal key on the GE.

Item	Quantity	Rarity	GE price
Uncut dragonstone	1	Always	12,077
Uncut diamond	3	Common	14,529
Uncut ruby	3	Common	5,526

Possibility 9 - Loop half of a key

The expected value of Possibility 9 is 38,130, which is a profit/loss of 16,319 if buying the crystal key on the GE.

Item	Quantity	Rarity	GE price
Uncut dragonstone	1	Always	12,077
Loop half of a key	1	Common	11,053
Coins	15,000	Common	15,000

Possibility 10 - Tooth half of a key

The expected value of Possibility 10 is 38,615, which is a profit/loss of 16,804 if buying the crystal key on the GE.

Item	Quantity	Rarity	GE price
Uncut dragonstone	1	Always	12,077
Tooth half of a key	1	Common	11,538
Coins	15,000	Common	15,000

Possibility 11 - Rune platebody

The expected value of Possibility 11 is 49,557, which is a profit/loss of 27,746 if buying the crystal key on the GE.

	Item	Quantity	Rarity	GE price
	Uncut dragonstone	1	Always	12,077
	Rune platebody	1	Common	37,480

Possibility 12 - Rune platelegs or plateskirt

The expected value of Possibility 12 is 49,079 for male characters and 49,138 for female characters, which is a profit/loss of 27,268 for male characters and 27,327 for female characters, if buying the crystal key on the GE.

Item	Quantity	Rarity	GE price
Uncut dragonstone	1	Always	12,077
Rune platelegs	1	Common^[1]	37,002
Rune plateskirt	1	Common^[1]	37,061

^ ^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

The expected value of Possibility 13 is 7,292,370, which is a profit/loss of 7,270,559 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	1	Always	12,077
Dragonstone helm	1	Very rare^[2]	7,341,200
Dragonstone hauberk	1	Very rare^[2]	12,743,872
Dragonstone greaves	1	Very rare^[2]	6,133,880
Dragonstone gauntlets	1	Very rare^[2]	5,932,094
Dragonstone boots	1	Very rare^[2]	4,250,417

^ https://twitter.com/JagexTimbo/status/557600452150579200
^ ^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

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

The expected value of Possibility 1 is 55,516.6, which is a profit/loss of 33,705.6 if buying the crystal key on the GE.

Item	Quantity	Rarity	GE price
Uncut dragonstone	1	Always	12,077
Yew seed	1	Common	15,302
Papaya tree seed	1	Common	2,896
Elder seed	1	Uncommon	180,802

Possibility 2 - Herb seeds

The expected value of Possibility 2 is 13,979, which is a profit/loss of −7,832 if buying the crystal key on the GE.

Item	Quantity	Rarity	GE price
Uncut dragonstone	1	Always	12,077
Dwarf weed seed	1	Common	822
Torstol seed	2	Common	1,080

Possibility 3

The expected value of Possibility 3 is 49,832, which is a profit/loss of 28,021 if buying the crystal key on the GE.

Item	Quantity	Rarity	GE price
Uncut dragonstone	1	Always	12,077
Grimy lantadyme	5	Common	37,755
Crystal tree blossom	1	Common	Not sold

Possibility 4 - Talismans

The expected value of Possibility 4 is 18,178, which is a profit/loss of −3,633 if buying the crystal key on the GE.

Item	Quantity	Rarity	GE price
Uncut dragonstone	1	Always	12,077
Fire talisman	5 (noted)	Common	1,045
Water talisman	2 (noted)	Common	5,056

Possibility 5 - Rune Halberd

The expected value of Possibility 5 is 21,455, which is a profit/loss of −356 if buying the crystal key on the GE.

	Item	Quantity	Rarity	GE price
	Uncut dragonstone	1	Always	12,077
	Rune halberd	1	Common	9,378

Possibility 6 - Ores

The expected value of Possibility 6 is 23,307, which is a profit/loss of 1,496 if buying the crystal key on the GE.

Item	Quantity	Rarity	GE price
Uncut dragonstone	1	Always	12,077
Coal	80 (noted)	Common	8,960
Adamantite ore	10 (noted)	Common	2,270
Corrupted ore	50	Common	Not sold

Possibility 7 - Rune bars

The expected value of Possibility 7 is 21,032, which is a profit/loss of −779 if buying the crystal key on the GE.

	Item	Quantity	Rarity	GE price
	Uncut dragonstone	1	Always	12,077
	Rune bar	3	Common	8,955

Possibility 8 - Uncut gems

The expected value of Possibility 8 is 32,132, which is a profit/loss of 10,321 if buying the crystal key on the GE.

Item	Quantity	Rarity	GE price
Uncut dragonstone	1	Always	12,077
Uncut diamond	3	Common	14,529
Uncut ruby	3	Common	5,526

Possibility 9 - Loop half of a key

The expected value of Possibility 9 is 23,130, which is a profit/loss of 1,319 if buying the crystal key on the GE.

Item	Quantity	Rarity	GE price
Uncut dragonstone	1	Always	12,077
Loop half of a key	1	Common	11,053
Crystal motherlode shard	10	Common	Not sold

Possibility 10 - Tooth half of a key

The expected value of Possibility 10 is 23,615, which is a profit/loss of 1,804 if buying the crystal key on the GE.

Item	Quantity	Rarity	GE price
Uncut dragonstone	1	Always	12,077
Tooth half of a key	1	Common	11,538
Crystal motherlode shard	10	Common	Not sold

Possibility 11 - Rune armour

The expected value of Possibility 11 is 63,619, which is a profit/loss of 41,808 if buying the crystal key on the GE.

Item	Quantity	Rarity	GE price
Uncut dragonstone	1	Always	12,077
Rune full helm	1	Common	20,892
Rune kiteshield	1	Common	30,650

Possibility 12 - Rune platelegs or plateskirt

The expected value of Possibility 12 is 49,079 for male characters and 49,138 for female characters, which is a profit/loss of 27,268 for male characters and 27,327 for female characters, if buying the crystal key on the GE.

Item	Quantity	Rarity	GE price
Uncut dragonstone	1	Always	12,077
Rune platelegs	1	Common^[1]	37,002
Rune plateskirt	1	Common^[1]	37,061

^ ^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

The expected value of Possibility 13 is 7,292,370, which is a profit/loss of 7,270,559 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	1	Always	12,077
Dragonstone helm	1	Very rare^[2]	7,341,200
Dragonstone hauberk	1	Very rare^[2]	12,743,872
Dragonstone greaves	1	Very rare^[2]	6,133,880
Dragonstone gauntlets	1	Very rare^[2]	5,932,094
Dragonstone boots	1	Very rare^[2]	4,250,417

^ https://twitter.com/JagexTimbo/status/557600452150579200
^ ^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

Taverley chest

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%

^ 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 29,584. 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

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 10,782. 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

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 0.000147%.

References

^ 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."*

[fruittree-1] 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%).

[legsskirt-2] 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.

[twitter.com-3] ttps://twitter.com/JagexTimbo/status/557600452150579200

[dragonstone2-4] With Possibility 13, you are guaranteed to get exactly one piece of dragonstone armour. Each piece has the same probability of being received.

[legsskirt2-5] 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.

[twitter.com-6] ttps://twitter.com/JagexTimbo/status/557600452150579200

[dragonstone2-7] With Possibility 13, you are guaranteed to get exactly one piece of dragonstone armour. Each piece has the same probability of being received.

[fruitseedrarity-8] 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.

[9] 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."*

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[notes 1]

[1]

@@ Line 19: / Line 19: @@
 |map2 = [[File:Crystal chest (Prifddinas) location.png|200px]]
 }}
-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.
+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.
+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.
 {{ToC|limit=2}}
 {{clear|left}}
 ==Rewards possibilities==
-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 gives all of the listed rewards when obtained.
+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:Ring of Wealth, Shanties, Trolls and Dungeoneering|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 only possible to obtain [[rune platelegs]] if you are a male character, and a [[rune plateskirt]] if you are a female character.
 ===Taverley chest===
@@ Line 165: / Line 165: @@
 ===Prifddinas chest===
-This 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.
+This chest was [[Update:Prifddinas - Lost City of the Elves|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=====
@@ Line 343: / Line 343: @@
 ===Prifddinas chest===
-:''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]].{{CiteGeneral|url=https://www.reddit.com/r/runescape/comments/6k6z23/10k_crystal_chests_vos_vs_no_vos/djka99i/|title=10K crystal chests VoS vs. no VoS|author=Mod Hunter|date=2017-06-29|accessdate=2017-06-30|quote=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.
+:''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]].{{CiteGeneral|url=https://www.reddit.com/r/runescape/comments/6k6z23/10k_crystal_chests_vos_vs_no_vos/djka99i/|title=10K crystal chests VoS vs. no VoS|author=Mod Hunter|date=2017-06-29|accessdate=2017-06-30|quote=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.
 }}''<!-- See the talk page. -->
 {|class="wikitable"
@@ Line 392: / Line 392: @@
 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 recieving [[elder seed]] when rolling possibility 1.
+* 8.675% chance of receiving [[elder seed]] when rolling possibility 1.
-* 63.385% chance of recieving [[papaya tree seed]] when rolling possibility 1.
+* 63.385% chance of receiving [[papaya tree seed]] when rolling possibility 1.
-* 27.94% chance of recieving [[yew seed]] when rolling possibility 1.
+* 27.94% chance of receiving [[yew seed]] when rolling possibility 1.
-* 20.39% chance of recieving [[dwarf weed seed]] when rolling possibility 2.
+* 20.39% chance of receiving [[dwarf weed seed]] when rolling possibility 2.
-* 79.61% chance of recieving [[torstol seed]] when rolling possibility 2.
+* 79.61% chance of receiving [[torstol seed]] when rolling possibility 2.
 ==Trivia==
 * 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 0.000147%.
 ==References==

v • d • e Iorwerth Clan district
NPCs	Lord Iorwerth Iorwerth herald Iorwerth musician Morvran Essyllt Mwynen Iorwerth worker Iorwerth scout Iorwerth guard
Items	Clan Iorwerth cape Iorwerth symbol piece
Rewards	of the Iorwerth Slayer XP lamp
Locations	Grand Library Morvran's Dungeon
Miscellaneous	Crystal chest Rush of Blood