Create Your Own Wedding Ring Where To Buy An Unset Eternity Prong Style Wedding Band?

Where to buy an unset eternity prong style wedding band? - create your own wedding ring

I try, a place to find the unset buy "style legs," Volume of Eternity, so you can find a ring (with my own sapphire) for my girlfriend. Each site was "set" bands. Please can someone lead me in the right direction on how to find jewelry and unset when they installed?

Thanks