Diamond Exchange Sydney

Following the success of Diamond Exchange Melbourne, The Thomas Group appointed Greater Group to design and build its Sydney showroom on Level 5 of The Georges Building, one of Sydney’s oldest and most prestigious heritage buildings.

From the outset, the intent was to make the existing heritage character part of the showroom experience rather than something to conceal. The restored pressed steel ceiling, original arches and existing timber floor became the backdrop for a more contemporary retail environment, creating a deliberate contrast between the history of the building and the precision of the jewellery on display.

That relationship was particularly relevant to the brand. The craftsmanship embedded in the original architecture echoed the handcrafted rings and specialist diamond service offered by Diamond Exchange, giving the showroom a setting that felt refined, considered and authentic.

Greater Group introduced new elements carefully, using dark walnut joinery, black steel, rose gold accents and controlled lighting to sit against the existing fabric rather than compete with it. Minimal display cabinetry keeps attention on the diamonds, while two large curved rose gold mirrors sit beneath existing arches to introduce the brand into the heritage setting without overwhelming it.

A large black steel glazed partition separates the staff areas from the main showroom, with proportions and detailing referencing the period character of the building. Custom diamond illustrations by a local artist were also integrated into the environment, giving customers a visual connection to the knowledge and craftsmanship behind the product.

The heritage conditions directly shaped how the project was built. Nothing could penetrate the original pressed steel ceiling, requiring specialist bracing for pendant and track lighting. The full-width glazed partition was also designed as a modular steel system so it could pass through the building’s restricted access and be assembled on site without relying on structural support from above.

The completed showroom brings together restored heritage architecture and contemporary jewellery retail without allowing either to dominate. Rich original detailing provides character and depth, while restrained joinery, lighting and display systems create a quieter foreground for the diamonds themselves.

Existing elements were retained wherever possible, including the timber flooring, while all new materials and fixtures were manufactured locally. The result is a flagship that feels specific to its building rather than transplanted into it, with the craftsmanship of the space reinforcing the craftsmanship of the product.

The project received Gold for Interior Design, Flagships & Showrooms at the 2019 Sydney Design Awards, recognising an adaptive reuse approach that balanced heritage preservation, retail function and contemporary luxury.