Museum Folkwang
  • Oriental Glass

  • Glass is the first artificial material man created. It was invented in the second century BC in the southeast Mediterranean region, where its raw materials (quartz sand, lime and soda) occur naturally. The main component, quartz, melts at around 1,700°C. In ancient times it was not easy to achieve such temperatures, but by adding flux melting agents such as mineral soda or special vegetable ash the melting point was lowered and by adding stabilizing lime raw glass could be smelted. Further admixtures to the glass such as copper or iron compounds colour the glass or change its transparency (for example the addition of tin).
    The first vessels were made using a method known as the sand core technique. This involved attaching to a baton a sand or clay core that was covered with liquid, usually dark blue opaque glass. Threads in contrasting shades of white, turquoise or yellow were applied, pulled across to create patterns and to »marver them in« by rolling them on a surface. After this, the edges were cleaned up and a handle attached. After the item had cooled down the soft core was removed from the middle, leaving behind a hollow area.
  • Exh_Title_S: Oriental Glass
  • Exh_Id: 502
  • Exh_Comment_S (Verantw): Archaeology, Global Art, Applied Arts
  • Exh_SpareNField01_N (Verantw ID): 185