I was watching a video about making your own "magic rocks." I remember making a magic rock garden when I was a kid. Basically the rocks are metal salts suspended in a sodium silicate solution. Metal silicate crystals form. I hope everyone remembers making rock gardens.
This got me thinking about saturated solutions and crystal formation. Let's say i made up a supersaturated solution of a metal salt, for example copper sulfate, then placed a bisqued pot into the solution. The pot would take up water and crystals would form on the outside and possibly in the clay body of the pot. I could remove the pot, let it dry, then spray a coat of glaze over the newly formed crystals. I could do this with Zinc, Boran, Molybdenum, Iron, or Lithium salts.
Many people soak pots in saltwater or K salt solutions prior to firing. But how about soaking the pots in Metal salts too... I think i will give it a try. I might get some cool glaze effects when the crystals interact with the glaze.
I could even add metal salts to a clay body, then spray a concentrated solution of Sodium silicate over the pot and fire it. It may develop "ceramic rock garden effects."