|Release date||4 October 2013 (Update)|
|Removal date||29 October 2013 (Update)|
|Value|| 100 coins |
|Alchemy||Cannot be alchemised|
|Destroy||Are you sure you want to destroy your Squeal of Fortune prize? You cannot reclaim it.|
|Store price||Not sold|
|Examine||Wearing this can entice a dwarf to help you mine.|
As of a recent update, it has an option to shatter the ring for immediate Mining or Smithing experience. This will also destroy the ring. The amount of experience given depends on your Smithing or Mining level. This option however will only grant you around 50% of the xp you would normally get. Your ring has to be unused to shatter it. Once it has already used one or more charges it can no longer be shattered.
On October 15th, 2013, Jagex announced, "The rings will remain in-game for two weeks, after which they will disappear..."
Multiple black iron rings do not stack in bank even if they are all unused.