Classic Gold Pendant CAD design needed

I want a clean, production-ready CAD model of a classic-style heart shaped pendant with stones, that will ultimately be cast in gold. The aesthetic should follow timeless jewellery proportions rather than modern minimalism or vintage ornamentation; think balanced curves, elegant bail, and a polished, high-end finish suitable for 14K or 18K gold.

You will translate my hand sketch and written measurements into a fully detailed 3D file that a manufacturing house can use straight away. I am comfortable with Rhino, MatrixGold or similar platforms, so please work in one of those (or an equivalent industry-standard package) and supply the native file along with a watertight STL.

Deliverables
• Editable native CAD file (e.g., 3DM, MGX or equivalent)
• Manifold STL scaled in millimetres, ready for CAM / wax growing
• A quick render or screenshot set that shows front, side and perspective views for visual confirmation before sign-off

Acceptance criteria
• Stone seats (if present) correctly dimensioned ±0.05 mm
• Wall and bail thickness no less than 0.8 mm
• File passes Materialise Magics or similar mesh check with zero errors

I will provide sketches, dimensions and any stone sizes as soon as we start, and I’m happy to iterate once or twice to nail the look.