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

Band Material18K Gold
Carat Size1ct

Made to order

IGI Certified

6 week lead time

Free, tracked shipping

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

$6,100.00 AUD

Behind the piece

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

Every Una ring begins with a clear point of view and a commitment to craft. Yours is no exception.

The Aurelia: Three-Stone Trilogy Lab-Grown Diamond Ring

Timeless. Symbolic. Unforgettably Elegant.
The Aurelia is a three-stone lab-grown diamond ring designed to celebrate your past, present, and future. Featuring a brilliant center diamond flanked by two matching side stones, this classic silhouette is rich with meaning and made to shine from every angle.

Crafted to order in your choice of 18K gold or platinum, each Aurelia ring features internally flawless, IGI-certified lab-grown diamonds, delivering beauty, ethics, and brilliance in perfect harmony.

Features:

  • Three brilliant lab-grown diamonds
  • Symbolic trilogy design: past, present, future
  • Carat range: Total weight from 1.5 to 5.0 carats
  • IGI certified and internally flawless
  • Custom engraving included at no extra cost
  • Available in 18K yellow gold, white gold, rose gold, or platinum
  • Made to order 

Customise Your Aurelia:

  • Choose your diamond size: Total carat weight from 1.5 to 5.0
  • Select your metal: 18K gold (yellow, white, or rose) or platinum
  • Add your personal engraving—complimentary
  • Built to order and shipped globally

Why Aurelia?

The Aurelia is a celebration of your journey—past memories, present love, and future dreams. Whether you’re marking an engagement, anniversary, or personal milestone, this trilogy design offers powerful symbolism with unmistakable elegance.

Design your Aurelia today  a ring that holds your story in three brilliant stones.
Sustainable. Iconic. Made for you.

create your own

The Una ring builder

Create the ring that feels like you. Our Ring Builder lets you choose your diamond, metal and proportions with total clarity, guided by the same design principles we use in-house.

design your ring

ready to wear

Our signature pieces

From delicate pavé bands to bold diamond staples, each Una design begins with a clear point of view: modern, refined, and made to be worn every day. Every piece is crafted with lab-grown diamonds, ensuring beauty with purpose.

explore the range

una x forever projects

Designed with care, backed by purpose

We’ve partnered with Forever Projects as part of our 1% Pledge. That means every single Una Diamond purchase contributes to life-changing programs for mothers and children.

learn more
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Need help deciding?

Let’s talk style, stone shapes, or self-gifting.
Book a styling consult
Shipping & Returns
How much is shipping?

Shipping is complimentary on all orders. Every piece is fully insured door-to-door and requires a signature on delivery.

Do you ship internationally?

Yes. We ship worldwide using trusted, insured courier partners.

All duties and taxes will be shown at checkout where applicable.

What is your return policy?

Please refer to our policy here.

Craftsmanship & Materials
What materials do you use?

All pieces are crafted in solid gold and set with IGI-certified lab-grown diamonds.

No plating. No mixed metals. No mined diamonds.

Where are your pieces made?

Every Una piece is handcrafted to order in our Australian workshop by experienced jewellers.

Are your diamonds real?

Absolutely. Lab-grown diamonds are chemically and optically identical to mined diamonds - the only difference is their origin, not their quality.

Are your diamonds certified?

Yes. All centre stones 1ct+ come with IGI certification.

Production & Lead Time
How long will my order take?

Each piece is made to order. Production typically takes 4–6 weeks, depending on the design.

Can I request a rush order?

If you have a specific date in mind, email us. We’ll always try to accommodate faster production where possible.

Do you offer engraving?

Yes. All pieces can be engraved at no additional cost. Enter your message at checkout or email us after purchase.

Can I make changes after ordering?

You can make small adjustments within 24 hours of placing your order. After that, your piece moves into production.

Need help choosing a diamond or design?

We’re here to help. Email us anytime at hello@unadiamond.com and we’ll get back to you within one business day.

Alternatively, book a complimentary consult if you prefer to talk through ideas.

Beautiful jewellery & fantastic customer service!

camila l

If you want beautiful custom made jewellery, fantastic customer service and something very unique that will last you a lifetime, look no further...

steve h

First marriage didn't work out, but I'm pretty sure it's because it wasn't an Una Diamond!

matthew m