Bead stores in Rome?
There are many in the area of China town. That area is properly called "Piazza Vittorio". There you will find many many shops owned by north africans that import beads from all over the world. This is the main source of beads in town, you can find great variety and good prices.
Not so far from Piazza Vittorio -which is a square, just close to Santa Maria Maggiore (a very big church) and behind Stazione Termini wich is the main train station in town- there's a tiny shop (a little more expensive, I must say) which is called "La pallina". It's located in Via Mecenate, which is a side street of Via Merulana. La pallina have another shop closer to the centre-town. It's in Via Margutta, 61. Via Margutta is just close to Via del Corso, the main street in the centre.
If you need more help, just write.
As you might have understood, I live in Rome