This glass was invented by the painter Mario De Luigi who, exploiting Salviati & Co . Experience in the field of mosaics, used this technique for the execution of a series of vases and dishes.

A given design is prepared on a bronzino , consisting of glass tesseras similiar to those used for mosaics, and the whole is then heated until a single plate is obtained. Then, with extreme difficulty, the plate is modelled in the form of a vase. 
This is the reason for the degree of approximation and the apparent non-uniformity of products, well matched by decorations in bright colours based on primitive motifs. After the XX Venice Biennale in 1936 these items were no longer proposed, as they were too difficult to make.