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How did Venetian latticinio glassmakers create white-thread patterns in clear glass?
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glassware
Fish of core-made glass with “combed” decoration, Egyptian, New Kingdom, 18th dynasty (c. 1363–46 bc). In the British Museum. 0.141 m × .069 m.
Venetian glassmakers created the intricate white-thread patterns known as latticinio by incorporating rods of opaque white glass into a matrix of clear, colourless glass (cristallo).
The process evolved in complexity over time:
- Basic Incorporation: Initially, opaque white glass rods were embedded into the body of a vessel and manipulated into various patterns.1
- Cable Formation: Glassmakers twisted these opaque threads into cables, which were then used to construct the walls of the glass vessel.2
- Lacy Patterns (vetro di trina): The most complex technique involved blowing a bulb of glass decorated with threads running in one direction, then inserting it into a second bulb with threads twisted in the opposite direction. The resulting composite globe was then worked into the final desired shape, creating a delicate, lacy white pattern throughout the glass.2
This technique became a hallmark of Venetian style, particularly as it gained popularity in the 16th century as an alternative to enamelling.2