Jewelry CAD Designer Needed – Production-Ready Sterling Silver Pendant

I’m looking for an experienced jewelry CAD designer to create a production-ready CAD model for one custom pendant based on the attached concept/reference images. The design is an open teardrop-style pendant with an integrated bail and a suspended round center gemstone. The initial version will be manufactured in .925 sterling silver and set with a round lab-grown diamond. The CAD needs to be designed for real jewelry production—not just rendering—including proper 4-prong stone-setting geometry, basket/stone seat, structural thickness, casting and polishing considerations, pavilion/culet clearance, and practical bail dimensions. Exact pendant and stone dimensions have not been finalized yet. I would appreciate input from someone experienced in jewelry manufacturing to recommend appropriate dimensions while preserving the proportions of the reference design. Required deliverables: * Production-ready STL * Editable/source CAD file (3DM, STEP, or equivalent) * Dimension information * Estimated metal weight if available * Render/images for approval before final delivery * At least one revision cycle Please include relevant examples of jewelry CAD you have created, particularly pieces involving prong-set gemstones, pendants, and models that were actually manufactured/cast. This is a one-piece project, but I may have additional jewelry CAD work in the future if the collaboration goes well.