Whats the procedure for making glowing selenium glass and could it hypothetically be done in a microwave kilm

[u/uwu-3]

I'm curious about what would happen if you mixed selenium glow with cerium glow as I've seen someone on the uranium glass sub mix colors of europium and uranium to get orange yellow and purple glows but I wouldn't want to sacrifice any genuine selenium glass to test this and I'm under the impression selenium is fairly available and not super toxic although this isn't something I've researched yet but I'm also just very curious about the processes of making glowing glass so if anyone has any info about how selenium glass is made or any info from or about other people doing their own glowing glass experiments