Probably none!
But I would say the bottom right looks like a candidate.
And since you asked "which bead(s)" I will say top center could also be real.
I would not bet on my guesses!
Thomas

Interesting.

Is that the one that appears to be glass? It was with a strand when I found it by the gram in one of Abdul's boxes recently, a little dirty...well, some vigorous rubbing on my Levi's along with a little nose oil ( okay, go ahead and go "eeewww", but it works and it's free!) and it is looking very beautiful.

The two beads floating in the brine solution are amber beads, the "sinkers" are plastic.The 2 beads are the far left and upper right in the first image. The simple brine test is 2 tablespoons of salt completely dissolved in 8 ounces of water. It is not totally conclusive, as there are a few plastics (mostly modern plastics) that will float in this solution. The bead in question must be free of hardware such as silver caps, etc...For my purposes, this test has been quite useful. I now have a nice group of beads that are plastic that have probably been perceived as amber many times in their existence. And some genuine amber ones have been great scores at flea markets!

Hi Joyce, I ran the same test about a month ago with similar results! Only one bead I thought was real turned out not to be!
All of 5, 6, and one of 7 are amber.
Jeff

This one has stumped me for several years, the hole is tapered, and there are rolled areas that look like someone rolled red gum into a ball?
J

I like this one - the tapered perforation is interesting - not that I know a lot about this industry, but it may be a clue to European manufacture, and one who knows specifics could probably tell us which country of origin.

I've considered cutting this down into a couple of large beads, but never "took the plunge"!
J