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The material used to produce the best tapestries were silk, wool, linen and eventually gold and silver.
Linen and wool were employed for the warp; wool and silk for the weave.
The finest wool came from England, silk from Italy, while gold originate in Cyprus island.
The difference in quality depended also from the size of the wire used for the warp and the weave.
A thick framework allowed the production of large sized tapestry, required a faster execution and a luminous effect. On the other side fine details rendering was not feasible (3 threads per cm).
The wool was fine woven. It was doubled or tripled to reach the required thickness.
Different shades of the same color were matched to render all details and colors, or contrasting colored wire were used to reach particular optic effects.