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. The expected value of Possibility 5 is 21,455, which is a profit/loss of -356 if buying the crystal key on the GE. 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. 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. 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. 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. At the least, the player should still wear a Ring of wealth when opening either crystal chest. It has an improved drop table over the chest in Taverley. 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. Each piece has the same probability of being received.

^ a b c d e With Possibility 13, you are guaranteed to get exactly one piece of dragonstone armour.

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. Possibility 12 - Rune platelegs or plateskirt 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.

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

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. 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. 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. 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. 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. 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%). ^ 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.1.2.13 Possibility 13 - Dragonstone armour.1.2.12 Possibility 12 - Rune platelegs or plateskirt.1.2.10 Possibility 10 - Tooth half of a key.1.2.9 Possibility 9 - Loop half of a key.1.1.13 Possibility 13 - Dragonstone armour.1.1.12 Possibility 12 - Rune platelegs or plateskirt.1.1.10 Possibility 10 - Tooth half of a key.1.1.9 Possibility 9 - Loop half of a key.The key is used once and disappears upon usage. 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 crystal chest in Prifddinas grants slightly better rewards than the Taverley chest. Opening a crystal chest grants a variety of rewards, which always include an uncut dragonstone. 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 chests are locked and can only be opened by a crystal key. A second chest is located in Prifddinas in the Iorwerth Clan district. The crystal key chest is a treasure chest located in Ivy Sophista's house in Taverley.