Arcane Crystal
It just means its more rare to receive it. The random-number gods have not been in your favor. Keep trying and you will (likely) receive some.
(You should think about the random rolls to get sliver)
When you get 1 arcane crystal, use it to make more with the mystic forge.
25 powder, 25 orb, 1000glory(item from vendor), 1 crystal = 11 crystals
Tsubaki, a friend of me told today about that also yeah. Good i heard it before i will get a arcane crystal / silver. Cause getting 2…. o boy. Will just keep on Salvaging than. Got most gear parts i can access, so can almost salvage everything.