I cad this up quickly as an example.Its different because I didnt want to copy but thought I will give you an idea. To make it I would start by measuring the stones place them where you want them them make the bezels and claws around them in CAD the claws are made longer than in the render so the stone can be set. You could then have it 3d printed and cast there would be a fair bit of clean up as the growlnes from the printing need to be smoothed. Im not saying one way is better or worse. This is just the method I would use to make a similar ring each way has its drawbacks.
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