Thanks, as Christine stated these beads were found in Mauritania, I suppose they don't have to originate from there though. Quite a few have considerable wear to the perforations showing at least some extensive use as I don't believe this wear was made when the bead was created. I would say that some of the beads are possibly newer as Jamey suggests and some could be Chrysoprase or Quartz. I don't believe that all of these beads originated in China, possibly a small handful. I used the term African Trade because I got these from a wonderful African woman trader, (Afua). I did not want to imply that these were used in the same sense as we have come to see "African Trade Beads".
Thank you all! Thomas