Columbarium key

A Columbarium key is acquired by the player after cremating a vyre corpse in the columbarium below Paterdomus after the Legacy of Seergaze quest. It unlocks wooden alcoves in the columbarium yielding various rewards. The keys look identical to the ornate tomb key received during the quest. This is the only way to get treasure trail items besides the treasure trails themselves, and trading with other players.

The following have been obtained:

Weapons and armour

 * God armour
 * Black, adamant, or rune armour (t)
 * Black, adamant, or rune armour (g)
 * Adamant full helm
 * Adamant platelegs
 * Black dragonhide set
 * Rune medium helmet
 * Rune platelegs
 * Mithril hatchet
 * Rune dagger
 * Rune spear (rare)
 * Dragon spear (rare)
 * Adamant javelin (12-28)
 * Rune javelin(6-12)
 * Iron arrows (81)
 * Steel arrows (67-115)
 * Adamant arrows (16-29)
 * Rune arrows (6-11)

Runes

 * Earth runes (62-122)
 * Chaos runes (7-19)
 * Death runes (8-15)
 * Blood runes (7-13)
 * Nature runes (8-15)
 * Law runes (7-13)

Other

 * God pages (rare)
 * Charms (obtained with other items)
 * Uncut gems
 * Half of a key
 * Herbs: Harralander and up, all herbs being a common reward. (including irit, ranarr, torstol, snapdragon and toadflax) (when Harralander, you get 2-3 herbs)
 * Irit seed
 * Kwuarm seed
 * Limpwurt seed
 * Cactus seed
 * Adamantite ore
 * Gold bar (8-13, noted)
 * Runite bar
 * Blood talisman
 * Nature talisman
 * Coins
 * Snapdragon seed
 * Steel bar (noted)

NOTE: The reward you get may include any of these items in various numbers. You can also obtain multiple different items from 1 reward.