Can someone tell me if these are Muarno

hello, can someone please tell me if these are Murano? if so to what? the are heavy and I have several of each size leaf/feather, 2 glass tubes of different sizes and jsut the one dome, there was a larger one but it is broken. the middle looks like a gold fleck rope and on bothe sides of it the glass is full of bubbles. I found these in a relatives house we were cleaning out, but noone in the family ever remembers them. just a piece of paper that said murano.

thanks for your help in advance