Ulrica Hydman Vallien, the wife of Bertil Vallien and an accomplished artist in may mediums including glass,
in her book from 1990, describes the "kabal" technique where Ulrica uses Paradise paint on the blank
after the design has been cut. The blank is then overlayed with clear crystal and blown out into the final form most often a heavy vase.
She also defines another method. The blank after being cut and painted is overlayed with a colored glass rather than the clear crystal. Cold workers then cut away to present the images in the glass. It si called a Jewel Technique.
Thought the group would be interested in this development.