Mel,
I am almost sure that these beads are modern Chinese production. I posted the name of a seller a few days ago and if you take the time to go and check out his sales on Ebay I think you will agree.

Regarding "Sulemani" agate beads, the best thing to do here is an image search and then look at the beads that dealers of ancient beads show, these type agates are very distinctive, the story is that this stone was from King Solomon's mine but who knows.

All my best ...... Danny