There is no idiom with "porcelain". You don't have to be formal, you must include the word "porcelain". "Glaze" is sometimes a synonym for porcelain.
You can name it "Millennium Glaze", personal suggestion.
Because "glaze light" is the so-called display of the traces of time on porcelain, it is used to identify porcelain. Porcelain is generally referred to with "glazed light" in its name. Many porcelain exhibitions and books are named after "glaze". Because porcelain has a long history, in order to show its cultural accumulation, I think it is better to use "thousand years" to modify "glaze".
The word "glaze full rhyme" is also very good, I think it is suitable for naming.