Aramuntite armour

Crest Armour is obtained by taking a Banner made from a POH to Thurgo along with a set of Runite and Adamantite armour. Caution: After using the two armour sets to create Crest Armour it is impossible to get them back as the smithing process is irreversable. You can change the crest at any time by going back to Thurgo with another banner.

After you give the armour sets to Thurgo, a cutscene will ensue in which he combines the two armour sets into a Runite-Adamantite set sporting your crest on the chestplate. The armour is automatically placed into your inventory after the cutscene. It can not be made using the Smithing skill, but requires a Crafting level of 48 and a Construction level of 56 to make as it requires that you bring a banner.

Crest Armour falls slightly short of Bandos armour and requires a level 63 Defense to wear. However, it is a cheap alternative to Barrows or Bandos because it does not degrade and it is much cheaper to make as it is actually made from a Rune set and an Adamant set. Note that it should never be used when using Ranged or Magic as the negative bonuses are simply too great for any benefit at all.

Stats
The full set has the following stats:

Trivia

 * In the update releasing the Crest Armour, Jagex stated that they had decided to release this set of armour along with the Reflectant chestplate, Reign Platebody, and other armour sets because they were rewards and additions that were going to be part of larger updates, but those updates were cancelled for various reasons. However, Jagex thought the armours were pretty neat and released them anyway.
 * Thurgo combines the Adamant and Rune armor sets in an animation that looks very similar to the Superheat Item spell.
 * The Adamant and Rune alloy surpasses Dragon, which suggests that perhaps Jagex planned to make other armour alloys that would be even stronger. Mod Mark confirmed that Crest Armour was original going to be Runamant armour and be part of an Alloy Armour update for the Smithing skill.
 * Jagex stated that they plan to make Crest Dragonhide and Crest Robes in a later update.
 * The examines for each of the pieces of armour differ for each crest.