I am not a professional jeweler, but I'm a great 3D modeler, and I have an eye for detail and for understanding my clients' wishes. I'm willing to go through several iterations of design changes. For best and most realistic results, the details have to be very accurate - the way the stones are set in the ring, the materials used, the width, thickness and diameter of the rings, etc. Discussing these details and ironing out the best ring designs will take time, especially since our time zones are different.
I'd like to note that 3D printing can not, at this moment, be used to create delicate jewelry with diamonds set in them. These images can be used as inspiration, and a professional jeweler will likely be able to create rings very close to these designs. However, perfect match between image and physical ring is unlikely - I don't know the metals' tolerances and other physical details, so some adjustments might be needed.
Relevant Skills and Experience
I can model realistic 3D models and create photorealistic renderings of them. Look at my portfolio for an example of a simple ring design I made based on your reference photo and description.
Proposed Milestones
$50 USD - I create designs you're happy with, after multiple rounds of iterations where we discuss details.
$172 USD - I provide you with the rendered, photorealistic images of your rings, shown on a simple background.