Where does “Sammet” come from?

Sammet (German) comes from Middle High German samīt, from Old French samit, from Latin samitum, from Ancient Greek ἑξάμιτον, from Ancient Greek ἕξ, from Proto-Hellenic hwéks, from Proto-Indo-European swéḱs — six.

Sammet (German): "archaic form of Samt"