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Mine, not mined.

Mine, not mined.

Custom lab-grown diamond rings, ethically made with zero mining harm.

Discover the one.

Discover the one.

Lab-grown diamonds, styled without compromise. Find the ring that’s unapologetically yours.

Diamonds, just because.

Diamonds, just because.

Not every diamond marks an engagement. Some are just for you.

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.

Shop our best sellers

Roma

Bold by design. A sculptural signet that refuses subtlety.

Sora

Smooth, domed, and sleek. A modern signet with everyday ease.

Aurelia

Three stones in harmony. Symmetry with light-catching brilliance.

Georgina

The classic oval solitaire, made unapologetically modern.

They said yes, then they said this

Discover why customers give us 5 stars

Recently purchased a ring from Una Diamond for my girlfriend - now fiancee! The customer service was impeccable and the team really made me feel very special and answered all my questions! The ring quality is awesome and I am really happy that I chose them.

Robert H

Beautifully crafted ring! Service was fantastic.

Samantha R

These rings are so beautiful, the quality is amazing, customer service great – I love my aquamarine white gold ring!”

Yvette S

Bought an amazing ring for our 10 year vow renewal. The experience was easy and the quality is fantastic. My wife loves her 2.1 carat emerald cut. Happy days!

Michael C

I’m absolutely in love with my ring! I had the pleasure of designing it together with the team at Una, and the whole process was so special. They brought my vision to life with such care and creativity — and the final result is SO BEAUTIFUL! I can’t stop looking at it. Thank you for making something so meaningful and perfect.

Luana Ö

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

Rings in real moments

FROM SKETCH TO STONE

Choose your metal, diamond, and setting. Handmade in 6 weeks, entirely yours.

Made to order. Created in 4-6 weeks. Fully tracked.

Why More People Are Choosing Lab-Grown

Sustainable Luxury

Lab-grown diamonds avoid the destructive mining process. You get the same brilliance with a lighter footprint, so your ring reflects your values as much as your style.

Certified Quality

Every diamond is graded by the International Gemological Institute (IGI). Cut, clarity, carat, color - verified by global standards so you know exactly what you’re buying.

Design First

Our designs draw from timeless icons but are built for now. Lab-grown gives us freedom to focus on proportion, detail, and modern wearability without compromise.

True Value

Lab-grown means more diamond for your spend - often 30-40% more. That could mean a larger stone, finer cut, or the freedom to invest in the setting you actually want.

UNA x FOREVER PROJECTS

Every ring gives back

We’ve partnered with Forever Projects to donate 1% of all diamond sales through Pledge 1%, helping mothers break the cycle of poverty and build a brighter future. Every Una Diamond purchase helps fund food, education, and startup support for women and families in Tanzania.

free styling service

Not sure where to start?

Book a free styling consult - all of the style, stone shape, or self-gifting advice, with none of the pressure.

FAQ

What are lab-grown diamonds?

Lab-grown diamonds are diamonds that are created in a controlled laboratory environment using technological processes that replicate the natural conditions under which diamonds form in the earth.

Are lab-grown diamonds real diamonds?

Yes, lab-grown diamonds are chemically and optically identical to mined diamonds. They have the same physical, chemical, and optical properties as natural diamonds.

How are lab-grown diamonds different from mined diamonds?

The main difference is their origin: lab-grown diamonds are created in a laboratory, while mined diamonds are naturally occurring gems extracted from the earth through mining.

Can lab-grown diamonds be certified?

Yes, our lab-grown diamonds are IGI certified just like mined diamonds.

Are lab-grown diamonds more affordable than mined diamonds?

Generally, yes. Lab-grown diamonds are often priced at a more competitive point compared to natural diamonds of similar quality, making them a cost-effective choice.

Can lab-grown diamonds be customized?

Yes, lab-grown diamonds can be customized into various shapes and sizes, and they can be set in different metals and settings according to your preferences.

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