Hey so I was just wondering, is that the samulet on Misha's neck on your post about Misha's acting on camera project?
Hahah, no, I don’t think so! The gifs are from Misha’s role on Nip/Tuck, which was way before he became Castiel in SPN. It looks a little similar at first glance, but where the Samulet is almost three-dimensional, this amulet is completely flat.
I couldn’t get a clear screencap, but I think it might be the “Om Mani Padme Hum”-Symbol, which is associated with yoga (Misha’s Nip/Tuck character practices yoga… rather avidly, let’s say). But that’s just a guess. At any rate, it’s definitely not the Samulet. :)
(Also, as a side note, it’s not Misha’s “Acting on Camera” Project - that’s just the title I gave my series of graphics of Misha’s roles in SPN and elsewhere, based on Misha’s old resume. :) )