Ricardia Ware produced by Richards Tiles in Stoke-on-Trent The glaze is, or is very like, one of the Richards Tiles' pre-war WM (wall mottle) glaze series. Those glazes contained oxides of lead which gave them certain flow and appearance characteristics. The use of lead oxides in glazes was banned after1947 because of their causation of lead poisoning of operatives. Lead bisilicate was substituted but it was not possible to get the same results. Ricardia, Pre Wars Wm, Antiques China, Lead Poison, Bans After1947, Lead Oxidized, Appearances Characteristics, Lead Bisil, Glaze Series
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Art Nouveau Tile Wallpaper by texturecrazy/cathairstudios, via Flickr
After the pot has been burnished, a fine slip and sacraficial glaze is applied in a random pattern. I then fire the vessel in an raku kiln and afterwards, place the glowing pot in sawdust and the white clay body turns black from the smoke. The glaze pops off and the resulting "naked" pot is buffed with a high-quality microcrystaline wax to preserve the sheen.