not on an Eternal Item because . in the later part of the post is a list of the few crystals that can be used on Eternal Items.
some Set Affixes can be rolled on any Classes Items, some can only be rolled on a certain Classes Items and then Jaspered to anther Class if necessary, and lastly the remaining Set Affixes can only be found on Looted Items. check this post .
I believe the 4 newest Sets can only be found on Looted Items.
. in the later part of the post is a list of the few crystals that can be used on Eternal Items.