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Showing posts from July, 2020

Virtual Kingdom A&S 2020: Chalcedony/Striking Glass

After my last project which was focused on just successfully making a glass, I began trying to refine my batch composition to eliminate lead so I would be comfortable using it in projects that do not stay with me. Shortly after accomplishing this, I got distracted by the range of effects that can be produced by including silver in glass. One effect I focused on is called striking, which is where the glass shifts through a rainbow of colors when reheated.

I approached this under the impression that striking glass was a more recent creation, but in the middle of the project, I came across extant pieces with similar coloration that were referred to as chalcedony glass. I eventually found a recipe dated to 1443 for this glass, and it did include striking as the last step of the process. This recipe, however, called for mercury and lead in its components. I had just managed to get lead out of my batch, and I was definitely not going to introduce mercury, so this project focused more on com…