S.B.
Hi R.! There are quite a few places around for good quality beads. You might try Another Bead Please! in the McClintock Fountains shopping plaza on the NE corner of McClintock and Warner (Tempe) or A-Z Beads on Priest, north of the Arizona Mills Mall. There is a place in east mesa down by Higley and Baseline, but I don't recall the name at this time - they're more of a wholesale retailer, but individuals can buy from them too (their selection is fabulous, but their prices are a little higher than most, unless you have a retail license).
Good luck!