The deep recession that hit all the big Italian glassblowing and handcrafted glass workshops at the beginning of the Fifties, ruined the Boschi Glassworks, which closed down in 1953, leaving five hundred families penniless.
Meanwhile, several glassmakers who had worked for the Boschi Glassworks before its final closure had attempted a business venture in 1952, establishing three new firms: C.A.L.B., V.I.T.A.C., and V.A.V.

Over the next three decades there was a real upheaval, with the birth of new firms, often followed by sudden bankruptcies, which were followed by new attempts and more problems. At the time of the 1961 census, seven glassworks and fifty one small grinding firms were operational.

Typical of the period, as well as the tremendous instability of the new businesses, was the tendency to produce articles which were very similar to one another: such as models - glasses but also jars - with a bubble in the solid base or the creation of unusual colours such as pink, amethyst and steel grey, as was common in some firms.
Many articles created by V.A.V. during that period were made from dichroic glass, which changes colour depending on the source of light to which it is exposed, as it is produced using a special vitreous mixture called 'Alexandrite'.
When lit by incandescent light, the remaining examples are a pink-violet colour which changes to blue-green if the source of light is fluorescent.