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Could also be Vigorsteel (chestpiece for sure). It's a crafted piece.

Not sure about the other pieces in this case, but I'm pretty sure the medium set from Sanctum has the same looks. at least...

Gotta check first to be sure, but got the complete set on my retired ranger, so will get back on this when I chekced ;)

Looks like Griefscale armour to me. Can be found in Sanctum if I'm correct.