Identically recreate a diamond ring design (3D Model)

Description

I need someone to take an antique ring design which I shall provide photos of, and recreate it in a 3D model, identically for a 2ct diamond. Dimensions of the diamond will also be given.
The 3D model will be used to give to a jeweller to make the ring.
I will need a .stp file and the original design files as deliverables. As well as basic renders of the ring shown I gold on a white background.