Spiral filigree

This is one of the most important techniques developed in Murano during the Renaissance, and involves the use of transparent glass rods containing milky or colored glass threads. If the threads in the rods are spiral (twisted) the filigree is called “a retortoli”, while if the rods are crossed it is called “a reticello” or “doppia”.

The work is carried out in successive phases: first, various non-perforated canes of crystal and opaque white glass, in the classic version, or of crystal and coloured glass, must be pulled, which must be assembled in a cylinder according to a regular arrangement. The reeds are then reheated and pulled again, twisting them during this last operation.

The hot union of these characteristic transparent canes with variously woven threads, incorporated inside them, allows for the obtaining of a single glass fabric which is then manipulated and blown until the desired shape is achieved.

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