Excerpt: Recently, I developed a new, unique surface, which I call a “halo/opal” glaze. Wherever light strikes this reticulated surface, it seems to radiate from a point, creating a halo. Glaze expert, Robin Hopper, suggested that I was creating “simulated opal”, hence the name “halo/opal” was adopted. I found that I could duplicate this effect only if I raku fired the ware multiple times and at different temperatures.