3rd age equipment

Third age armour is a members only group of armour that is only obtained through completing Level 3 Treasure trails, trading with other players or by buying in Grand Exchange. According to Paul Gower, the odds of getting a piece of Third Age armour from a Treasure Trail are very small. There are three types of armour, one for each combat class, and each class has a specific piece of armour specified for that class:

Third age armour is very expensive, a full set of melee armour about equaling the price of a partyhat. Because of this, it is rarely worn, as some other types of armour give almost as good bonuses and are far, far cheaper.
 * Third age warrior armour (Melee) (shield)
 * Third age mage armour (Magic) (amulet)
 * Third age ranger armour (Ranged) (vambraces)
 * Third age druidic equipment (Prayer) (staff)

Third Age armour generally rose in price after its release until early 2008. At that point it was bought out in the Grand Exchange for months. Some merchants used the armour as a method to sell partyhats. However, the price eventually peaked and crashed. Since then, the price of third age armour has become more stable, although the ability of the price to be stable is impaired by the low trade volume and the infrequent price updates (they do not happen every day).

In the behind the scenes July 2010, Jagex stated that they would be releasing elite treasure trails (dropped only by certain boss monsters) introducing over 150 new rewards, some of which would be including third age prayer armour.

This "third age prayer armour" turned out to be the Third Age Druidic Equipment, which has, suprisingly, no stats over +20 and no minuses (excluding staff, which has a +50 crush bonus). Though the total Prayer bonus is +31, there are better armour setups.