I understand that some of the Jews who came >from Europe (Italy?) a few hundred years ago and joined the Jewish community in Hevron, brought this trade with them and it is they who are the source of the modern-day Arab glass craft in that city.
Israel Pickholtz Jerusalem
Glassmaking was one of the few artisan professions where Jewish artisans were not forced to convert to Christianity and join guilds in order to continue to work as glassmakers. As a result, many of the Jewish glassmaking families retained their Jewish identity for centuries in Christian Europe.