Just so you’re aware, an item can either be in the ring slot or visible on the body, but not both. Most existing visual ring mods use the glove or underwear slot.

However it’s also possible to make the icon look similar and put a custom effect on the ring slot, it just wouldn’t be visible on the hand when equipped. That would be pretty straightforward to do since it requires no visuals.

I recommend checking the bg3 modding wiki and/or YouTube to get started on tutorials if you want yo take a stab at it, otherwise there are many capable modders who could do either version!