# Certified Diamond Network Expands In-House Custom Engagement Ring Design for Sydney Couples

> Certified Diamond Network has expanded its bespoke engagement ring design service in Parramatta, offering in-house sourcing and manufacturing for Sydney couples.

- Published: 2026-11-04T11:53:01+00:00
- Section: Expansion
- Author: News Desk
- URL: https://newsforagent.com/news/2026-11-04/certified-diamond-network-custom-ring-design-expansion
- Source: [Business & Financial](https://menafn.com/1111912204/Certified-Diamond-Network-Invites-Sydney-Couples-To-Design-Custom-Engagement-Rings-In-House-In-Parramatta)

## Key takeaways

- Certified Diamond Network expanded its custom engagement ring design service at its Parramatta studio to meet demand from Sydney couples.
- The studio handles loose diamond sourcing, hand-drawn sketches, CAD-CAM modelling and final manufacture on site.
- Master jeweller Carl Swaab, who has over 40 years of trade experience, leads design consultations alongside Edward Swaab.

[Certified Diamond Network](https://akta.pro/company-profiles/000vp99/certified-diamond-network) has expanded its bespoke engagement ring design service at its Parramatta studio to meet growing demand from couples across Greater Sydney, according to [Business & Financial](https://menafn.com/1111912204/Certified-Diamond-Network-Invites-Sydney-Couples-To-Design-Custom-Engagement-Rings-In-House-In-Parramatta). The studio handles loose diamond sourcing, hand-drawn sketches, CAD-CAM modelling and final manufacture on site at 73/48–50 George Street, Parramatta.

## Certified Diamond Network's In-House Design Process

The expanded service is aimed at couples seeking an alternative to chain retail, where pre-set designs come in limited metal and stone combinations. Certified Diamond Network sources loose diamonds and coloured gemstones directly through its wholesale network, then designs and manufactures each ring to the client's specification. Natural white diamonds, fancy coloured diamonds, Argyle pink diamonds, and certified gemstones including sapphires, emeralds and rubies are available for viewing at the studio by appointment.

The studio is led by Carl Swaab and Edward Swaab, both credentialled through the Gemmological Association of Australia. Carl Swaab has operated as a master jeweller and diamond specialist in Western Sydney for over four decades. "Most people come in with a budget and a shape in mind and leave with something far better than they thought was possible at that price point," Carl Swaab said. "When you source the diamond yourself and craft the ring in-house, you cut out multiple layers of margin."

The custom design process runs in four stages: a no-obligation consultation to establish the couple's brief, a curated selection of loose diamonds or gemstones for in-person comparison, a hand-drawn sketch or CAD render documenting the agreed design, and on-site manufacture with the diamond's independent grading report from GIA or IGI where applicable. The studio also designs wedding and eternity rings, men's wedding bands, and handles jewellery remodelling and repair, a service it has offered for more than 20 years.

## Certified Diamond Network's Parramatta History

According to akta.pro [company records](https://akta.pro/company-data), Certified Diamond Network has operated a bespoke custom jewellery studio in Parramatta since 1974, specialising in handcrafted engagement, wedding and dress rings under founder Edward Swaab. The same records describe the studio as a single-showroom business with a headcount range of 1-10 and a revenue estimate under $1 million. The records also note the studio's adoption of CAD/CAM design technology, including 3D virtual imaging, wax and resin modelling and precision casting, to complement traditional handcrafting.

The company's profile lists Edward Swaab as founder, master jeweller and award-winning designer, with over 40 years of experience in jewellery design and craftsmanship. The records state the studio serves customers across 22 or more suburbs in the Parramatta region, including Winston Hills, Westmead, Wentworthville, Wentworth Point, Carlingford and Epping.

## What Comes Next for Certified Diamond Network

Certified Diamond Network accepts design consultations Monday to Saturday at its George Street studio, with appointments required to view loose stones. The studio's [website](http://www.certifieddiamondnetwork.com.au) lists opening hours of 9:30 AM to 5:00 PM Monday to Friday and 9:30 AM to 3:00 PM Saturday.

## Companies in this story

- [Certified Diamond Network company profile](https://akta.pro/company-profiles/000vp99/certified-diamond-network) · website: http://www.certifieddiamondnetwork.com.au

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