Enamel comes to existence when glass and metal are melt together at around 900 degrees.
The wonderful technique has fallen into unclearness by now; its use of modern sense is proven to be detected only from the Egyptian artifacts in PCB XVII. Century.
The technique was brought to Hungary by the miniature pictures of the Saint Crown.
We also have these exact items on display in our offline stores in Budapest, so once you ordered them, we have to check whether they are still available for shipping.