Need help with creating iridescent/pearlescent material

[Timmaigh!]

As the title says, i am supposed to use this specific material:

https://aloxide.com/en/references/khun-by-yoo-thailand/

and having hard time to get acceptable results, when i tried to do it on my own with my limited knowledge of this stuff. I tried to mix bunch of those metals available in library, alongside the fall-off map, but could not get it quite right, i mean its metallic material, but the way the sun reflects in it seems like there is another more mirror-like glossy layer or whatever, tough to put it into words. This really is above my skills, i guess it requires actual knowledge of physics or something, and its not the kind of material you can do with changing bunch of numbers.

So please, if anyone here could point me in the right direction how to do it, or even better share this kind of material (obviously not neccesarily the specific colors), i would be much obliged.

Thanks