Glass mastered CDs

I’ve watched this site and was wondering if there are any glass-mastered CD-Rs in the market. does anyone know ?

Glass-mastering is only used in stamping CDs or DVDs. It is the template for the pits and landings that are the data on the disc. It would make no sense for there to be a glass-mastered CD-R, as CD-R uses dye to store the data.