This glasswork is executed with the Vetrofusione technique or Fussed Glass in english. The method involve layering thin sheets of glass, often using different colors to create patterns or simple images. The stack is then placed inside the kiln and heated until the separate pieces begin to bond together. The golden part is make with a Gold Leaf and the 'baubles' are Murrines. All these combinations of techniques make the Christmas Tree Collection very unique and valuable.