Armadyl rune

An Armadyl rune is a type of rune released with the Grandmaster quest, Ritual of the Mahjarrat. It can be crafted with a Runecrafting level of 72 after the quest is completed, giving the player 10 experience. This amount cannot be increased with Air runecrafting gloves.

The rune is required to cast the spell Storm of Armadyl and is made from pure essence and Dust of Armadyl, which itself is made from grinding Armadyl shards, dropped only by Glacors. Players must bring the component items to the air altar in order to craft the runes. The number of runes per essence is the same as for an air rune, meaning that a minimum of 7 per essence are made due to the level requirement. The rune also resembles an air rune, albeit green.

Runecrafting Value Analysis
The value per dust depends on how many runes the player is able to craft per Dust of Armadyl based on their runecrafting level. The minimum level to craft these is 72, so the minimum runes possible per dust is 7; The maximum at 99 runecrafting is 10. The Grand Exchange market values per shard if made into runes are as follows:

Note: All prices are based on the current Grand Exchange market prices.

Price History
Prior to the Evolution of Combat, the price of Armadyl runes fluctuated between approximately and  due to the previous damage potential of this spell. However, since the Evolution of Combat, the spell has been paled in comparison to many of the higher level spells, which had led to the recent decline in price, now at. Because of the now lower price of Armadyl runes, they are far less frequently crafted due to the reduced profit potential. Thus, Armadyl shards are more profitable if turned into an Armadyl battlestaff instead.

Trivia

 * There was originally a bug that allowed players to craft Armadyl runes if they had the dust, pure essence, and required runecrafting level regardless if they had finished Ritual of the Mahjarrat.

Armadyl rune