Treasure

A treasure is a special type of chest found only in Elona. Every treasure contains some gold and one purple item, gold item, or one gem (a ruby, sapphire, or diamond). The amount of gold and the quality of the item vary depending on the area where the treasure was found (from 500 for treasures on Istan to greater than 3 for treasures in the Realm of Torment) and whether the item received was a gem, a gold item, or a purple item (purple items only come with about 2/3 the amount of gold). All together, a character can collect around 20 by opening all of the treasures available.

Some advocate the theory that better riches are to be had from opening treasures in hard mode, though this is unconfirmed as of yet.

But I can now confirm that you can open each chest twice, once in normal and again in hard mode

Unlike normal chests, treasures need no key to open and any gold received from it will automatically appear in the player's inventory. However, a character cannot re-open a given treasure until it resets for that character. ArenaNet has not stated the criteria for the resets although one instance of a reset is entering hard mode. Some presume treasures can be re-opened after waiting a month, however some reportedly cannot open chests even after a month has passed.

There are three types of objects that are considered to be treasure:
 * Treasure Chest
 * Buried Treasure
 * Do Not Touch

"Do Not Touch" objects are guarded by monsters, and activating them will spawn an item, gold, and either Immolated Djinn or Ruby Djinn. Due to the often confined spaces, it is not a good idea for the whole party to stand together when the "Do Not Touch" objects are activated. Both varieties of Djinn are known to use either Savannah Heat or Searing Flames. The Djinn type and the elite skill used appear to be random.