Custom Gold Chain Necklace Design

I’m ready to turn an idea for a gold chain necklace into a production-ready reality. The piece must be a classic chain style—no pendants or chokers—crafted in gold, with a look that feels premium yet wearable every day.

Here’s what I need from you:
• Concept sketches or digital mood boards that show the overall aesthetic and link shape
• A full 3D CAD model (Rhino, MatrixGold, or similar) with precise measurements, clasp mechanics, and weight estimate in 18k gold
• High-quality renders in at least two metal finishes (polished yellow and brushed) so I can visualise surface treatment
• A manufacturing packet: STL or STEP files, technical drawings with tolerances, and a short bill of materials

Acceptance criteria
• Link dimensions line up cleanly when tiled into a 45 cm length
• Clasp integrates seamlessly and withstands normal pull forces (you can suggest a lobster or box clasp, whichever best suits the design)
• Final files open error-free in Rhino 7

If you’ve designed fine jewellery chains before, feel free to share a couple of examples so I can see how you handle proportion and detailing. I’m happy to answer any questions about gauge, karat, or finishing as we go.