Isn't that stunning? Charles Horner made a lot of enamel on silver jewellery , but this was mainly champ levee, rather than either cloisonne or plique a jour - literally "raised field" the background silver is hollowed out to take the enamel, rather than wires being placed on top of the backing as in cloisonne. I think that your plique a jour (which I have never seen, or if I have, didn't know what it was) is wonderful.
I don't wear much jewellery only earrings and I can imagine that this technique would be wonderful for those, as they hang and would show the light shining through.
thank you for this!