Effetre is possibly the best-known glass range used in soft glass lampworking and beadmaking. Also known (mostly in the US) as Moretti, this range is manufactured on the island of Murano near Venice, Italy. The company have been manufacturing lampworking glass on Murano for about five centuries, and now produce a wide range of coloured glass rods which are stable in colour and work easily in the flame. A comprehensive and affordable range, Effetre glass forms the basis of most soft glass beadmakers’ and lampworkers’ colour repertoire. Nominally, the coefficient of expansion (coe) is 104.