Project Overview:

Nyra is a solitaire engagement ring built around a single idea: movement. Instead of a symmetrical halo or a static pavé band, the design lets a single ribbon of diamonds break free from the shank, arc upward, and fold back into itself to form a leaf silhouette — as if the metal itself is caught mid-motion around the center stone.

The piece was fully modeled in MatrixGold and rendered in Cinema 4D with Corona Renderer, developed as a personal/portfolio project to demonstrate a complete jewelry visualization pipeline — from parametric CAD to photoreal studio output — for brands looking to validate designs before physical production.

Design Intent

The brief I set myself was simple: take the "twist halo" concept — common in commercial bridal jewelry — and push it somewhere less predictable.

• Center stone: Round brilliant, 4-prong setting, left clean and unobstructed so the wrap reads as a frame, not a cage

• The wrap: An asymmetric double ribbon — one arm sweeping high and wide across the top of the stone, the other folding into a tighter leaf/petal shape on the right — both fully pavé-set

• The shank: A soft, sculptural taper that keeps the visual weight up top while staying comfortable and low-profile at the base

• Metal: 18k rose gold, chosen to warm up the stark white of the pavé and center stone and give the piece an editorial, wearable-jewelry-ad feel rather than a sterile CAD render look

The goal was a ring that photographs like a hero shot straight out of the box — no ambiguity about scale, stone count, or setting style — because that's exactly what a client needs before committing to a physical sample.

Process

1. CAD in MatrixGold The ring was built parametrically, starting with the shank profile and prong basket, then developing the ribbon geometry as a swept NURBS surface so the width, thickness, and pavé spacing could be adjusted without rebuilding the piece from scratch. Stone population followed real-world pavé setting logic — consistent stone spacing and graduated sizing along the curve — so the CAD file itself is production-accurate, not just a visual approximation.

2. Export & Scene Build in Cinema 4D The finished CAD was exported and brought into C4D for scene assembly: camera placement, turntable-ready pivot, and studio lighting rig built to mimic a classic jewelry catalog setup — soft key, subtle rim, and a bounce card to keep facet sparkle controlled rather than blown out.

3. Shading & Render in Corona Materials were built for physical accuracy rather than "AI-shortcut" realism:

• 18k rose gold with a true metallic Fresnel response and micro-roughness for realistic highlight rolloff

• Diamonds with correct IOR, dispersion, and internal reflection so the facet fire reads correctly under the studio HDRI

• Ground plane and soft shadow catcher to keep the final image e-commerce-ready — clean, isolated, no distracting environment

Multiple passes were rendered at varying camera angles to simulate a real product shoot: hero angle, top-down, and a macro crop on the pavé work to show setting quality up close.

why this approach

This project is a proof-of-concept for a workflow I offer commercially: CAD → photoreal render → pre-production validation. Instead of a brand committing to physical sampling before they know if a design resonates, this pipeline lets them see — and market-test — a piece that doesn't exist yet, at a fraction of the cost and lead time of casting a physical sample.

tool  used

MatrixGold — CAD & stone-setting logic Cinema 4D — scene assembly & camera work Corona Renderer — physically-based shading & rendering