Further reading
- Customisation trends in lab-grown diamond rings
- Oval vs emerald cut: which diamond shape is right for you?
- Celebrity endorsements of lab-grown diamonds
Engagement ring trends in Australia are shifting — towards rings that feel personal, considered, and quietly distinctive. Here's what's dominating in 2026.
1. Oval cuts, still reigning
The oval cut has been Australia's most searched engagement ring shape for three consecutive years. Its elongating effect, face-up size, and versatility keep it firmly in first place. Our Georgina is Una Diamond's take on the oval solitaire — pared back, precisely set, handcrafted in 18K gold or platinum.
2. Emerald cuts rising
The emerald cut has been the breakout shape of the last two years in Australia. Its architectural step facets appeal to buyers who want sophistication over showiness. The east-west orientation — set horizontally across the finger — has particularly resonated. Explore our emerald-cut collection.
3. Toi et moi and multi-stone rings
Two stones side by side — the toi et moi ring has surged following high-profile celebrity engagements. It allows for unique shape combinations: oval + pear, oval + emerald, round + emerald. See our multi-stone collection.
4. Bezel settings for everyday wearers
The bezel setting — where the diamond is encircled by a metal rim rather than prongs — offers a secure, snag-free option with a distinctly modern look. Our Bea is a contemporary take on this style.
5. Vintage and Art Deco-inspired designs
Geometric milgrain, scrollwork, and Art Deco-inspired metalwork continue to perform strongly in 2026. Our vintage-inspired collection offers several options in this direction.
6. Lab-grown as the default
Perhaps the most significant shift: lab-grown diamonds are no longer the "affordable alternative." They've become the default choice for a large proportion of Australian couples, driven by transparency, value, and considered purchasing. Browse the Una Diamond collection — all rings are IGI-certified and made to order in six weeks.