When you choose a diamond, you’re not just choosing sparkle, you’re choosing a story. At Faire & Fine, that story begins with an uncompromising commitment to quality. While lab-grown diamonds share the same physical, chemical, and optical properties as their mined counterparts, not all lab-grown diamonds are created equal. In fact, only the top 1% make it into our collections, earning us a reputation for offering some of the best lab grown diamonds London, and the UK, has to offer.

Based in Hatton Garden, the historic heart of British jewellery making, we craft each piece locally for clients across London and the UK. Whether you visit us in person or book a virtual consultation, our commitment to quality remains the same.

“Every diamond has its own character. Our job is to bring out its personality through thoughtful design,” says co-founder Matt.

The Faire & Fine Selection Standard

We work with a carefully chosen network of specialist diamond growers and suppliers who share our dedication to excellence. From thousands of stones produced, we hand-select only those that meet our exacting criteria for cut, clarity, colour, and carat weight, going beyond the traditional 4Cs to assess:

• Symmetry – for balanced light return

• Polish – for surface perfection

• Light performance – for brilliance and fire

Learn more about our diamond education.

Cut Above the Rest

Cut is everything. Even the most flawless diamond will look dull if poorly cut. We require excellent or ideal cuts only, ensuring each facet is positioned to maximise brilliance, fire, and scintillation. Our gemologists inspect each diamond under magnification to confirm every facet aligns perfectly.

Clarity Without Compromise

We only accept VS clarity or higher, meaning inclusions (if any) are not visible to the naked eye. This guarantees a diamond that looks flawless in person, not just on paper, ideal for clients seeking ethical engagement rings London buyers can trust.

True-to-Life Colour

Our diamonds must be colourless, which are those graded D–F. This ensures a pure, icy brilliance that complements every metal type, from classic yellow gold to our signature recycled platinum.

All the Shapes You Love (and More)

Every love story is unique, and so is the diamond that represents it. We offer all the classic shapes, including:

• Round brilliant

• Oval

• Emerald

• Princess

• Cushion

• Pear

• Marquise

If you’re dreaming of something less common, whether it’s a heart-shaped diamond, an Asscher cut, or a custom-cut silhouette, we’ll source or create it. If you can imagine it, we can make it sparkle.

Enquire about our custom engagement ring process.

The Allure of Coloured Diamonds

For those seeking something truly distinctive, lab-grown diamonds open up an extraordinary palette of colours, from romantic blush pinks and champagne tones to striking yellows, icy blues, and deep greens. Each shade tells a different story: warmth, creativity, individuality, or understated glamour.

Because they’re grown in a lab, these vibrant hues are not only rare and beautiful but also far more accessible and sustainable than their mined counterparts. Whether as a centrepiece or as an accent stone, fancy coloured lab grown diamonds let you express your personality in a way that’s unforgettable.

Our Stone-First Approach

At Faire & Fine, we believe the stone should set the stage. That’s why every ring we create is designed around the selected diamond, not the other way around. This “stone-first” approach ensures that the setting perfectly complements the unique proportions, brilliance, and character of your chosen gem.

It’s not about fitting a diamond into a pre-made mount, it’s about crafting a piece of jewellery that celebrates and elevates the one, extraordinary stone you’ve selected. This ensures both beauty & longevity of your chosen piece.

How Our Standards Compare

Ethical Origins, Every Time

Because our diamonds are grown in controlled laboratory environments, we can trace every single one back to its origin. This means:

• No questionable supply chains

• No conflict stones

• No destructive mining practices

Just beauty with integrity, ideal for those searching for more sustainable diamond jewellery in London and across the UK.

Independently Certified

Every diamond we offer is independently graded by a respected gemological laboratory. This third-party certification confirms its quality and authenticity, so you can be confident you’re getting exactly what we promise.

The Faire & Fine Final Check

Before a diamond is ever set into a ring, our in-house team conducts a final inspection. We review light performance, symmetry, polish, and overall presence to make sure it meets our high standards. Only then do we present it to our clients, because if it’s not perfect, it’s not Faire & Fine.

Mini FAQ: Best Lab Grown Diamonds London, UK

Are lab-grown diamonds real diamonds?
Yes. Lab-grown diamonds have the same physical, chemical, and optical properties as mined diamonds. The only difference is their origin.

Do you only serve clients in London?
No. While our workshop is in Hatton Garden, we work with clients across the UK through virtual consultations and insured nationwide delivery.

How long does a custom ring take?
On average, 4–5 weeks from stone selection to finished ring, depending on the complexity of the design.

View more of our diamond FAQs.

Why the 1% Matters

By choosing only the top 1% of lab-grown diamonds, we ensure that every piece we create is worthy of its story, whether it’s an engagement, an anniversary, or a moment just for you. It’s this dedication that makes us one of the most trusted destinations for the best lab grown diamonds in London.

Looking for the perfect diamond in London?
View our engagement ring collection or start your custom ring journey with one of the finest lab-grown diamonds available.