Fiorato Mosaic with Vette and beads in Avventurina. Aventurine is one of the antiques and popular Murano Glass techniques, distinguished by its sparkling look, created by tiny gilt star particles captured in the translucent glass. As in Venice is called, Aventurine is a Murano glass-making technique developed in Murano in the 17th century. History tells that a document dating from 1614, “a kind of stone with gilt stars inside,” mesmerized people with the unusual and attractive look, was reported. The technique owes its name to the fact that its discovery happened by chance, thanks to a lucky coincidence to have accidentally dropped some metal shavings into the glass mixture. All’avventura means by sheer accident. The original recipe involves a mix of metal oxides to the hot glass mixture; the particles of the metals crystallize as the glass mixture cools off, giving that glittering surface.