Reticello Glass tazza

From the mid-15th to around the end of the 17th century, Venetian products were the standard against which all other Glasswork had to be measured. On the island of Murano off the coast of Venice, the maestri created ever new Glassblowing variations and invented techniques that took this art to its limits. One such technique was reticello (in older sources redesello) and involves two Glass bubbles, each with applied, generally opaque white Glass threads distorted into spiral shapes, inserted into each other and blown in such a way that the spiral threads crisscross to form a mesh and trap a tiny air bubble in each lozenge. The reticello technique emerged in the 2nd quarter of the 16th century and was regularly employed in the subsequent period. (Dedo von Kerssenbrock-Krosigk)