Crystal goblet glassware 36 piece set

Inherited so I do not know the origins or history. 36 pieces, 3 sizes and 6 colors (red/green/purple/yellow/dark blue/light blue) with gold design and edging. Label reads 'created in Italy' and "Fait a la main" wich is French for hand made. Great Grandpa said they are valuable but didn't have any other information. I would like to know the origins and value.