I am an experienced 3D Modelling Animator and Jewellery Expert. I have a large library of designed rings, and there are ring that are similar to these ones You have posted, so this job could be finished quickly.
Also, I have a few questions about the project. I saw that you have posted 10 rings, but 2 of them looks the same except the render (color of the gold). Is that the only difference or there are more differences? Should the design be done by using only these pictures, or there will be some more?
Best regards,
Milan