I thought that might get your attention – nothing to do with going on a long drive. I have ex poste, updated my paper on Knox’s “cloisonne opal” designs to include a discussion whether it would have been more appropriate to call his technique “champleve opal”. I feel either, or both, are equally fair to use. Additionally I have since found a Rene Lalique brooch using the same technique and dating to c 1900 giving the tantalising possibility that Knox was influenced by Lalique, or better still, the other way round (see Fig 8a of the revised paper). See this link to get to the new paper.
