Thanks for looking into this Remy_Epic!
Both Fab and Sketchfab listings are just drafts so I’m not sure these URLs will work for you but here they are:
Sketchfab
Fab
https://www.fab.com/portal/listings/3e61bc03-45ad-47bb-8300-33ee5f3100ee/preview
I’m also attaching the Blender model here.
Stupa Reliquary 20250104.blend (20.0 MB)
There is only one material assigned to the model, I tried making materials for each channel but when I upload the model to the Fab viewer it only shows one material.
I have a few other models we could look at but so far they all seem to have the same issue.
Thanks!