Clare Humphry's smoke-fired bowls are submitted to the flames of an open fire, where she has limited control over the final look of the piece. Over the past seven years she has developed her crystal-glazes to enhance the random nature of the results as the crystals grow spontaneously through the molten liquid glaze, and swirl the oxide-colourings around in the process.
This ensures that all of her bowls, whether smoke-fired or crystal-glazed, are completely unique and you can be sure that no-one else in the world has one that is exactly the same as yours.