Several of these beads made me think about how hard it would be for a new collector to distinguish the new from the old for this style of fancy bead.

Two of the Indo beads had a much redder color than usually found on Venetian beads. The other two (on the right) have cobalt blue cores, but look like black cores at first glance. The holes are a little rough on the two cobalt base beads, but otherwise they are stellar copies.

I don't own any of this particular bead any more, so I can't do a side-by-side comparison, but I'm including a picture that shows several Venetian beads - not in top condition sorry.