Among my favorites in the glass world are always the iridescent coated glasses of the color glassworks Bullseye Glass. You can recognize the Bullseye iridescence well by the predominantly silk-matte areas, which give an actually very transparent glass an additional slightly diffuse touch. At the same time, the iridescence is not too strong. All in all a very noble character !
Exactly this also applies to the colorless structural glass used here. All further details can be found in the free pattern download.