Collections – Una Diamond

This site has limited support for your browser. We recommend switching to Edge, Chrome, Safari, or Firefox.

Free insured worldwide shipping

6-week lead time, handmade to order

Book a free styling consult

Cart 0

No more products available for purchase

Products

Pair with

Is this a gift?

Leave a note about your order

Add order notes

Leave a note about your order

Your Cart is Empty

Every collection, every story

From solitaires to statement rings, explore the full Una world of lab-grown diamonds.

SCROLL TO SHOP THE COLLECTIONS BELOW

IGI Certified

Every diamond graded by the world’s leading lab. No guesswork, just proof.

Built to Give Back

1% of every ring funds women & children in Tanzania. Giving back is built in.

Complimentary Engraving

From initials to dates or a secret message, it’s the detail that makes it truly yours.

Proudly Female Founded

Una Diamond was created by women to challenge the old guard and reshape what luxury looks like.

The Roma Radiant Signet Diamond Ring – Lab-Grown | 18K White Gold

From $6,100.00 AUD

The Sora 18K Yellow Gold: Oval-Cut Lab-Grown Diamond Signet Ring | 18K Gold or Platinum

From $6,100.00 AUD

The Valencia 18K Yellow Gold: Emerald-Cut Tapered baguette Lab-Grown Diamond Art Deco Ring

From $6,500.00 AUD

The Orion 18K White Gold: Multi-Stone Lab-Grown Diamond Band

From $6,100.00 AUD

The Nova 18K White Gold: Pear & Emerald-Cut Lab-Grown Diamond Toi et Moi Ring 18K White Gold

From $6,100.00 AUD

The Nova: 18K Yellow Gold Pear & Emerald-Cut Lab-Grown Diamond Toi et Moi Ring

From $6,100.00 AUD

The Orion 18K Yellow Gold: Multi-Stone Lab-Grown Diamond Band

From $6,100.00 AUD

The Valencia 18K White Gold: Emerald-Cut Tapered baguette Lab-Grown Diamond Art Deco Ring

From $6,500.00 AUD

The Sora 18K White Gold: Oval-Cut Lab-Grown Diamond Signet Ring | 18K Gold or Platinum

From $6,100.00 AUD

The Roma Radiant Signet Diamond Ring – Lab-Grown | 18K Yellow Gold

From $6,100.00 AUD

The Eva, Diamond Pavé Lab-Grown Band | 18K White Gold

From $7,550.00 AUD

celina-emerald-cut-lab-grown-diamond-engagement-ring-18k-white-gold-top

celina-emerald-cut-lab-grown-diamond-engagement-ring-18k-white-gold-side2_jpg

Celina, East West Emerald Diamond Ring – Lab-Grown | 18K White Gold

From $6,100.00 AUD

The Valencia 18K Yellow Gold: Emerald-Cut Tapered baguette Lab-Grown Diamond Art Deco Ring

From $6,500.00 AUD

The Bea 18K White Gold: Emerald-Cut Lab-Grown Diamond Bezel Ring

From $6,100.00 AUD

The Nova 18K White Gold: Pear & Emerald-Cut Lab-Grown Diamond Toi et Moi Ring 18K White Gold

From $6,100.00 AUD

The Valencia 18K White Gold: Emerald-Cut Tapered baguette Lab-Grown Diamond Art Deco Ring

From $6,500.00 AUD

The Nova: 18K Yellow Gold Pear & Emerald-Cut Lab-Grown Diamond Toi et Moi Ring

From $6,100.00 AUD

The Bea 18K Yellow Gold: Emerald-Cut Lab-Grown Diamond Bezel Ring

From $6,100.00 AUD

celina-emerald-cut-lab-grown-diamond-engagement-ring-18k-yellow-gold-top

Celina Emerald Cut Diamond Ring – Lab-Grown | 18K Yellow Gold

From $6,100.00 AUD

The Eva, Diamond Pavé Lab-Grown Band | 18K White Gold

From $7,550.00 AUD

celina-emerald-cut-lab-grown-diamond-engagement-ring-18k-white-gold-top

celina-emerald-cut-lab-grown-diamond-engagement-ring-18k-white-gold-side2_jpg

Celina, East West Emerald Diamond Ring – Lab-Grown | 18K White Gold

From $6,100.00 AUD

Marina Marquise Cut Diamond Ring – Lab-Grown | 18K White Gold or Platinum

From $6,100.00 AUD

The Roma Radiant Signet Diamond Ring – Lab-Grown | 18K White Gold

From $6,100.00 AUD

The Sora 18K Yellow Gold: Oval-Cut Lab-Grown Diamond Signet Ring | 18K Gold or Platinum

From $6,100.00 AUD

The Bea 18K White Gold: Emerald-Cut Lab-Grown Diamond Bezel Ring

From $6,100.00 AUD

The Georgina 18K White Gold: Oval-Cut Lab-Grown Diamond Solitaire Ring

From $6,100.00 AUD

The Sora 18K White Gold: Oval-Cut Lab-Grown Diamond Signet Ring | 18K Gold or Platinum

From $6,100.00 AUD

The Georgina 18K Yellow Gold: Oval-Cut Lab-Grown Diamond Solitaire Ring

From $6,100.00 AUD

The Bea 18K Yellow Gold: Emerald-Cut Lab-Grown Diamond Bezel Ring

From $6,100.00 AUD

Marina Marquise Cut Diamond Ring – Lab-Grown | 18K Yellow Gold

From $6,100.00 AUD

The Roma Radiant Signet Diamond Ring – Lab-Grown | 18K Yellow Gold

From $6,100.00 AUD

celina-emerald-cut-lab-grown-diamond-engagement-ring-18k-yellow-gold-top

Celina Emerald Cut Diamond Ring – Lab-Grown | 18K Yellow Gold

From $6,100.00 AUD

Trilogy Cut Diamond Ring – Lab-Grown | 18K Yellow Gold

From $6,100.00 AUD

The Sora 18K Yellow Gold: Oval-Cut Lab-Grown Diamond Signet Ring | 18K Gold or Platinum

From $6,100.00 AUD

The Georgina 18K White Gold: Oval-Cut Lab-Grown Diamond Solitaire Ring

From $6,100.00 AUD

The Sora 18K White Gold: Oval-Cut Lab-Grown Diamond Signet Ring | 18K Gold or Platinum

From $6,100.00 AUD

Trilogy Cut Diamond Ring – Lab-Grown | 18K White Gold

From $6,100.00 AUD

The Georgina 18K Yellow Gold: Oval-Cut Lab-Grown Diamond Solitaire Ring

From $6,100.00 AUD

The Eva, Diamond Pavé Lab-Grown Band | 18K White Gold

From $7,550.00 AUD

celina-emerald-cut-lab-grown-diamond-engagement-ring-18k-white-gold-top

celina-emerald-cut-lab-grown-diamond-engagement-ring-18k-white-gold-side2_jpg

Celina, East West Emerald Diamond Ring – Lab-Grown | 18K White Gold

From $6,100.00 AUD

Marina Marquise Cut Diamond Ring – Lab-Grown | 18K White Gold or Platinum

From $6,100.00 AUD

Trilogy Cut Diamond Ring – Lab-Grown | 18K Yellow Gold

From $6,100.00 AUD

The Roma Radiant Signet Diamond Ring – Lab-Grown | 18K White Gold

From $6,100.00 AUD

The Sora 18K Yellow Gold: Oval-Cut Lab-Grown Diamond Signet Ring | 18K Gold or Platinum

From $6,100.00 AUD

The Valencia 18K Yellow Gold: Emerald-Cut Tapered baguette Lab-Grown Diamond Art Deco Ring

From $6,500.00 AUD

The Bea 18K White Gold: Emerald-Cut Lab-Grown Diamond Bezel Ring

From $6,100.00 AUD

The Orion 18K White Gold: Multi-Stone Lab-Grown Diamond Band

From $6,100.00 AUD

The Georgina 18K White Gold: Oval-Cut Lab-Grown Diamond Solitaire Ring

From $6,100.00 AUD

The Nova 18K White Gold: Pear & Emerald-Cut Lab-Grown Diamond Toi et Moi Ring 18K White Gold

From $6,100.00 AUD

Una Diamond Gift Card ✨

From $50.00 AUD

Trilogy Cut Diamond Ring – Lab-Grown | 18K White Gold

From $6,100.00 AUD

The Valencia 18K White Gold: Emerald-Cut Tapered baguette Lab-Grown Diamond Art Deco Ring

From $6,500.00 AUD

The Sora 18K White Gold: Oval-Cut Lab-Grown Diamond Signet Ring | 18K Gold or Platinum

From $6,100.00 AUD

The Roma Radiant Signet Diamond Ring – Lab-Grown | 18K Yellow Gold

From $6,100.00 AUD

The Orion 18K Yellow Gold: Multi-Stone Lab-Grown Diamond Band

From $6,100.00 AUD

The Georgina 18K Yellow Gold: Oval-Cut Lab-Grown Diamond Solitaire Ring

From $6,100.00 AUD

The Nova: 18K Yellow Gold Pear & Emerald-Cut Lab-Grown Diamond Toi et Moi Ring

From $6,100.00 AUD

The Bea 18K Yellow Gold: Emerald-Cut Lab-Grown Diamond Bezel Ring

From $6,100.00 AUD

Marina Marquise Cut Diamond Ring – Lab-Grown | 18K Yellow Gold

From $6,100.00 AUD

celina-emerald-cut-lab-grown-diamond-engagement-ring-18k-yellow-gold-top

Celina Emerald Cut Diamond Ring – Lab-Grown | 18K Yellow Gold

From $6,100.00 AUD

Prefer something custom?

Build your dream ring

Choose your diamond, metal, and setting - or start from scratch. We'll help you create a ring that's entirely yours.

Start building

Shop The Edit

From bold bands to elegant vintage pieces, each ring is handmade to order.

Vintage Inspired

Rings in real moments

Which one are you?

The Purist

Less is more - clean lines, sharp tailoring, and timeless taste. Your ring is a forever piece, not a fleeting trend.

Shop Bea

The Maximalist

You never met a bold detail you didn’t love. Bigger, brighter, louder - your ring is as unapologetic as you are.

shop roma

The Romantic

You live for story and sentiment. Soft silhouettes, poetic gestures - your ring is a love letter you can wear.

shop marina

The Modernist

You’re all about form with purpose. Sleek, sculptural, future-facing - your ring is art for everyday life.

shop sora