The amulet of glory (t) (or trimmed amulet of glory) is a cosmetic variant of the regular amulet of glory. Players can receive this item as a reward from hard Treasure Trails at a chance of 1/1,625 per slot. Aside from appearance, it has the same functions and stat bonuses as a regular amulet of glory.
This item can be stored in the treasure chest of a costume room. However, unlike its regular counterpart, it cannot be mounted in a Quest Hall.
For Ironmen completing treasure trails, this can NOT be used as an uncharged amulet of glory - only a regular amulet of glory may be used, obtained either through crafting one at level 80, or by completing other treasure trails.
Heroes' Quest is required to charge the amulet at the Fountain of Rune. Like the regular amulet of glory, there is a 1 in 25,000 chance that it will transmute into an amulet of eternal glory when charged at the Fountain of Rune, causing it to provide unlimited teleports rather than the usual six. This will cause it to lose its trimmed status.
For an exhaustive list of all known sources for this item, see here