Manually with the glass pipe manufactured "forest glass" plate.

The diameter is approximately 26 cm. "Forest Glass" is a specialty of Lauscha Glassworks. There is a glass bubble with a high proportion and a greenish tint. This is a replica of a historic glass around the time of the beginnings of glass production in the German low mountain reaches. It was not yet possible to change the glass bubbles to purify or discolor.

You buy a product of the glassblower brand Lauscha glass.