as you can see the way you have the model sitting those lines are bound to show up in that area of the print.
show us the ring itself and how you are setting it up to print from the print software with supports we may be able to help you
set it at an angle to reduce those lines.
You can also use fine sand paper to do it before you send them to cast after it is cured. But you will want to
cure it again after you sand it.
I'm so far behind I think I'm First !!