Guild Wars 2

I am guessing that it is karma gear. Unfortunately karma gear cannot be salvaged or sold. The reasoning behind it is because they didn’t want people to profit from karma (although that went out the window slightly with the karma gambling boxes).

That is my only guess.

karma gear can be thrown into the mystic forge to give a random item. if you would sell it, it gives about the same profit as if you had salvaged it instead (unless there’s some good socketed things in it)
wait… are you sure you can’t salvage karma gear? I feel like you can, but can’t remember ever doing it, just comparing salvaging to Mystic Forge and deciding to convert karma to gold via Mystic Forge.
if you have something that you can’t salvage, but you REALLY want the socket out of it, you can use a fine T stone (or normal, if the item level is less than 80) to transmute it into a white item. just make sure to use the white item’s stats and the socket you want to salvage. then you can salvage it to get some mithril and your socket.

personally, I have some rather worthless rare and exotic back pieces that I’d like to be able to salvage. any idea why you can’t salvage those? things like Ghostly Spineguard. so worthless to sell them, but you’d think they should be worth more.
then there’s ascended rings I’d like to salvage as well