I bought these in Venice some years ago at a little boutique ...  they aren't marked silver but they look like they are and polish like silver so they seem to be, but of what grade I do not know.    They are 2 3/4 inches long.  The glass beads are very nice amber with an Aurora Borialis finish, Are they made in Murano like most things that are tourists ?  I do not know.  But, the hand made look of the piece makes me suspect they are.