Amazon Green Opal
226-74
(Handy Sheet 300 mm x 300 mm)
[Spectrum 226-74 SF]

Amazon green green will only devit it you get fire above 790+ and hold for too long, having said this your annealing needs to be taken into consideration that you're not going too fast.
You can cap it with clear to stop the devit. Cheers Grace-Azure Glass

Love this colour, and use it a lot. But it likes to devit on me. I don't know why, must be a green thing. But it's a lovely true colour when fired, really fresh and bright.