Jewellery CAD and Render Designer Needed

Hi! I run Soniyah, a family jewellery house in Dubai (since 1956). We're launching an online store selling 18K gold and IGI-certified lab-grown diamond jewellery.

I'm looking for a jewellery-specific CAD designer for a small first collection (bangles, rings, earrings, pendants). For each piece I need two things:

1) Production files for our artisan
- CAD in STL / 3DM / OBJ
- A technical drawing with dimensions, estimated metal weight, stone count and sizes, and setting type
- Made to our sizes: ring EU 44-70, bangle 2.0-3.2 inch, bracelet 14-22 cm, necklace 35-100 cm

2) Presentation renders for design approval and the website
- Front, three-quarter and macro detail
- 4:5 portrait, at least 2400 px on the long edge
- Warm white background #F1EBDD, soft light from the upper-left
- A deep velvet #561221 version for the hero
- Metal variants: 18K yellow, white and rose gold; lab-grown diamond options

Brand rules: flat and clean, no gradients, glow, stock or AI images presented as real products, and no watermarks. Product listings will use real photos of the actual pieces; the renders are for design approval and clearly illustrative visuals. I need full commercial rights and the source files.

If you also do SVG line art or product photography, mention it, but CAD and renders are the priority.

Could you share:
1. Examples of jewellery CAD/renders you've done, especially bangles/rings with stones
2. The software you use (Rhino/Matrix/Blender/ZBrush)
3. Whether you provide STL/3DM plus a technical drawing
4. Price per piece and turnaround for a first test piece (one bangle)
5. How many revisions are included
6. Whether you can sign a simple NDA

If the first piece goes well, there is more work. Thanks!

https://www.instagram.com/jewelsth?obrf=dWk1ZG0wbWE1NHFm this is the kind of designs we are looking for, TH jewellers is the physical store and Soniyah is online store