Posting missing in cyberspace - mine.
The thing about Verde is that the state the glass industry and the markets were in after the war, glass makers from Murano were unemployed and the bottle ovens in Empoli were hot - so Empoli employed Murano workers. That is why Empoli verde is 90% bottle green and 10% bottle amber and have such characteristic features of traditional Murano glass from the twenties and thirties but without the colour. The Verde period lasted until the early seventies or late sixties. There is supposed to be an exhibition catalogue from circa 1995 but I have not found it yet.
Empoli was the centre where (I believe ) a dozen factories operated, all of which merged into 3 conglomerates. These subsequently moved out to surrounding valleys: Colle Val d'Elsa, Poggibonsi etc. The dominant one is still VE which is now the producer of ornamental bottles. CIVE does table glass, and STIVER pressed glass (replica and ice cream parlour) - and these are all important industries.