Im trying to find some TEMPERED GLASS BEADS, 6 or 8 mm.

Any recommendations on a brand?

Don Iovino products sell tempered glass faceted holographic 8 mm beads, I don't know his source.

Tom

Thanks WRB  I will check there and tw also. Thanks for your time sir.

This won't help the OP, but I was able to find the best assortment of glass beads while visiting some shops in Corning, NY.  Tons of amazing stuff there.  Was there on a mini-vacation visit to the glass museum.

Hobby Lobby

FYI glass beads are the way to go.  I got a big bag of plastic colored beads from Michael's and after a year in the tackle box some of the plastic beads are melting/sticking to each other.  Going to throw away/give away all of the plastic beads and use nothing but glass from here on out!

I've always used Kalin's beads

You could go with a tungsten bead instead as well. 

15 hours ago, WIGuide said:

You could go with a tungsten bead instead as well. 

I might try them, thank you sir.