Crystal chest

From the RuneScape Wiki, the wiki for all things RuneScape
Jump to navigation Jump to search

The crystal 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 just to the west of the altar. 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 by using a loop half of a key with a tooth half of a key (or vice versa) or by clicking on one and selecting the "Assemble" option.

Opening a crystal chest grants a variety of rewards, which always include an uncut dragonstone. The key is used once and disappears upon usage. The chests are included among the actions that can provide a money tree seed, regardless of the reward received from the chest.

Taverley Chest Rewards[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. Having tier 2 or higher luck will increase your chances of getting a better drop.

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

The expected value of Possibility 1 is 6,283, which is a profit/loss of −7,276 if buying the crystal key on the GE.

  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 6,104, which is a profit/loss of −7,455 if buying the crystal key on the GE.

Possibility 3 - Grimy torstols[edit | edit source]

The expected value of Possibility 3 is 20,394, which is a profit/loss of 6,835 if buying the crystal key on the GE.

Possibility 4 - Runes[edit | edit source]

The expected value of Possibility 4 is 137,628, which is a profit/loss of 124,069 if buying the crystal key on the GE.

Possibility 5 - Iron stone spirits[edit | edit source]

The expected value of Possibility 5 is 6,828, which is a profit/loss of −6,731 if buying the crystal key on the GE.

Possibility 6 - Coal stone spirits[edit | edit source]

The expected value of Possibility 6 is 7,228, which is a profit/loss of −6,331 if buying the crystal key on the GE.

Possibility 7 - Runite stone spirits[edit | edit source]

The expected value of Possibility 7 is 7,843, which is a profit/loss of −5,716 if buying the crystal key on the GE.

Possibility 8 - Gems[edit | edit source]

The expected value of Possibility 8 is 9,922, which is a profit/loss of −3,637 if buying the crystal key on the GE.

Possibility 9 - Loop half of a key[edit | edit source]

The expected value of Possibility 9 is 31,926, which is a profit/loss of 18,367 if buying the crystal key on the GE.

Possibility 10 - Tooth half of a key[edit | edit source]

The expected value of Possibility 10 is 32,079, which is a profit/loss of 18,520 if buying the crystal key on the GE.

Possibility 11 - Huge plated rune salvage[edit | edit source]

The expected value of Possibility 11 is 44,050, which is a profit/loss of 30,491 if buying the crystal key on the GE.

Possibility 12 - Large plated rune salvage[edit | edit source]

The expected value of Possibility 12 is 35,927, which is a profit/loss of 22,368 , if buying the crystal key on the GE.

Possibility 13 - Dragonstone armour[edit | edit source]

The expected value of Possibility 13 is 5,750,644, which is a profit/loss of 5,737,085 if buying the crystal key on the GE.

Receiving this possibility is very rare, at a rate of 1/6801.[1]
  1. ^ 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 Rewards[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. Higher tier luck, however, will provide better rewards.

Possibility 1 - Tree seeds[edit | edit source]

The expected value of Possibility 1 is 12,729.8, which is a profit/loss of −829.2 if buying the crystal key on the GE.

  1. ^ a b c With Possibility 1, you are guaranteed to get either a yew seed, papaya tree seed or elder seed.

Possibility 2 - Herb seeds[edit | edit source]

The expected value of Possibility 2 is 7,901.6, which is a profit/loss of −5,657.4 if buying the crystal key on the GE.

  1. ^ a b With Possibility 2, you are guaranteed to get either a dwarf weed seed or torstol seeds.

Possibility 3[edit | edit source]

The expected value of Possibility 3 is 49,153, which is a profit/loss of 35,594 if buying the crystal key on the GE.

Possibility 4 - Talismans[edit | edit source]

The expected value of Possibility 4 is 8,292, which is a profit/loss of −5,267 if buying the crystal key on the GE.

Possibility 5 - Huge bladed rune salvage[edit | edit source]

The expected value of Possibility 5 is 82,728, which is a profit/loss of 69,169 if buying the crystal key on the GE.

Possibility 6 - Stone spirits[edit | edit source]

The expected value of Possibility 6 is 6,328, which is a profit/loss of −7,231 if buying the crystal key on the GE.

Possibility 7 - Runite stone spirits[edit | edit source]

The expected value of Possibility 7 is 9,453, which is a profit/loss of −4,106 if buying the crystal key on the GE.

Possibility 8 - Uncut gems[edit | edit source]

The expected value of Possibility 8 is 9,922, which is a profit/loss of −3,637 if buying the crystal key on the GE.

Possibility 9 - Loop half of a key[edit | edit source]

The expected value of Possibility 9 is 16,926, which is a profit/loss of 3,367 if buying the crystal key on the GE.

  1. ^ With possibility 9, you have a 17.785% of also obtaining motherlode shards alongside the other two rewards.

Possibility 10 - Tooth half of a key[edit | edit source]

The expected value of Possibility 10 is 17,079, which is a profit/loss of 3,520 if buying the crystal key on the GE.

  1. ^ With possibility 10, you have a 17.785% of also obtaining motherlode shards alongside the other two rewards.

Possibility 11 - Large plated rune salvage and Medium plated rune salvage[edit | edit source]

The expected value of Possibility 11 is 58,452, which is a profit/loss of 44,893 if buying the crystal key on the GE.

Possibility 12 - Large plated rune salvage[edit | edit source]

The expected value of Possibility 12 is 35,927, which is a profit/loss of 22,368 , if buying the crystal key on the GE.

Possibility 13 - Dragonstone armour[edit | edit source]

The expected value of Possibility 13 is 5,750,644, which is a profit/loss of 5,737,085 if buying the crystal key on the GE.

Receiving this possibility is very rare, at a rate of 1/6801.[1]
  1. ^ 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 26000 crystal chest loots on the Taverley chest, while wearing a luck of the Dwarves.
Possibility Percentage
Possibility 1: Fruit tree seed 5.98%[n 1]
Possibility 2: Lantadyme seeds 9.15%
Possibility 3: Grimy torstols 9.30%
Possibility 4: Runes 8.92%
Possibility 5: Iron stone spirits 9.18%
Possibility 6: Coal stone spirits 9.19%
Possibility 7: Runite stone spirits 9.08%
Possibility 8: Gems 8.98%
Possibility 9: Loop half of a key 7.71%
Possibility 10: Tooth half of a key 7.53%
Possibility 11: Huge plated rune salvage 6.10%
Possibility 12: Large plated rune salvage 8.88%
Possibility 13: Dragonstone armour < 0.02%
Secondary: Money tree seed 0.05%[n 2]
  1. ^ The official probability of receiving a calquat or papaya tree seed is 5:11 (45.45%) each and the probability of receiving a palm tree seed is 1:11 (9%). This data shows a probability of 52.14% for the calquat, 39.31% for the papaya, and 8.55% for the palm tree seed.
  2. ^ Requires 99 Farming. Secondary reward.

Using these probabilities, the expected average profit/loss, per crystal key, when looting the crystal chest is 15,197, assuming 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. This also excludes the money tree seeds, as this is not a direct reward from the chest and does not replace any of the other rewards.

Prifddinas chest[edit | edit source]

The probabilities in this section are an estimation based on the data of 100,000 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.[2]
Possibility Percentage
Possibility 1: Tree seeds 7.517%
Possibility 2: Herb seeds 7.578%
Possibility 3: Grimy lantadymes 4.482%
Possibility 4: Talismans 7.574%
Possibility 5: Huge bladed rune salvages 6.27%
Possibility 6: Orichalcite and drakolith stone spirits 10.719%
Possibility 7: Runite stone spirits 9.196%
Possibility 8: Gems 9.058%
Possibility 9: Loop half of a key 9.059%
Possibility 10: Tooth half of a key 9.157%
Possibility 11: Large and medium plated rune salvage 8.949%
Possibility 12: Large plated rune salvage 10.949%
Possibility 13: Dragonstone armour 0.013%
Secondary: Money tree seed 0.08%[n 1]
  1. ^ Requires 99 Farming. Secondary reward.

Using these probabilities, the expected average profit/loss, per crystal key, when looting the crystal chest is 10,268, assuming the crystal key is bought at GE price and the luck of the Dwarves ring is worn.

This excludes:

  • crystal tree blossom, corrupted ore and crystal motherlode shard, as they do not have an intrinsic value.
  • dragonstone armour piece, as this possibility is much too rare to estimate with any acceptable accuracy
  • money tree seed, as this is not a direct reward from the chest and does not replace any of the other rewards.

Estimate probabilities for non-guaranteed loot are:

  • 19.88% 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.

Update history[edit | edit source]

This information has been compiled as part of the update history project. Some updates may not be included - see here for how to help out!
  • patch 10 May 2021 (Update):
    • Lantadyme Seeds will now go into the Bank instead of the Backpack when choosing the option 'Bank all' in the Crystal Chest interface in Taverley.
  • patch 4 May 2020 (Update):
    • Adamantite and coal stone spirits have been replaced by orichalcite and drakolith stone spirits for the Prifddinas crystal chest.
  • update 11 June 2013 (Update):
    • We've updated the loot available in the crystal key chest. Collect both halves of the key and open the chest in Taverley, and you'll likely find that your returns will be better than before. There's even a small chance to pick up a piece of dragonstone armour.

Trivia[edit | edit source]

References[edit | edit source]

  1. ^ a b Jagex. Mod Timbo's Twitter account. 20 January 2015. (Archived from the original on 21 January 2015.) Mod Timbo: "Soulstones from HM GWD: 1/25 | Dragonstone Armour: 1/6801 for any piece from Crystal Chest or 1/907 for any piece from Crystal Triskelion..."
  2. ^ Mod Hunter. 10K crystal chests VoS vs. no VoS. 29 June 2017. (Archived from the original on 6 August 2020.) "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."