Own recipe: frit 90167, quartz, kaolin, bentonite, beach sand.
Material between glass and ceramic, my own recipe: frit, quartz, kaolin, bentonite, and beach sand, cast in plaster-quartz molds. Where it pools it crystallizes, where it thins it goes translucent; graphite in the batch makes it opaque. Organisms as test bodies. Beach sand as reinforcement: grains don't melt, they sit as structure. Some pieces electroformed in copper. 100% my material, or 0%, depending on how you look at it.