Searching for the best place to buy a lab-grown diamond in the UK? The quick answer is the curated list of 18 retailers below – opening with family-run atelier A Star Diamonds in Hatton Garden and closing with international e-tailer Blue Nile, which ships duty-paid to your door. Lab-grown diamonds are chemically identical to mined stones, often produced with renewable energy, independently certified by IGI or GIA, and typically cost 30–40 % less.

Before choosing a jeweller, most shoppers weigh up certification, price per carat, ethical credentials, style range, after-sales perks and whether they prefer a showroom chat or an online checkout.

Quick facts UK buyers ask for:

• 1-carat price: usually £1,200–£2,800, depending on cut, colour and clarity.
• Value: identical brilliance, lower price and footprint; resale market still developing.
• Hatton Garden availability: absolutely – several boutiques, including our #1 pick, specialise in lab stones.

With those essentials covered, let’s dive into the 18 best places to buy lab-grown diamonds in the UK right now.

1. A Star Diamonds, Hatton Garden – Bespoke Craftsmanship & Lifetime Care

Tucked away in a sun-lit workshop just off London’s Hatton Garden, A Star Diamonds is proof that “family-run” and “state-of-the-art” can happily coexist. Every ring begins with a chat over coffee—either in person or on WhatsApp—before moving through sketches, CAD renders and finally in-house casting. The result: a piece that tells your story rather than someone else’s.

Quick Profile & USP

• Independent atelier run by second-generation jewellers and gemologists
• One-to-one guidance from first idea to proposal day
• UK-made; nothing is outsourced overseas

Range of Lab-Grown Diamonds & Jewellery

• Loose IGI/GIA-certified stones from 0.25 ct to well over 5 ct
• Bespoke engagement rings in Solitaire, Hidden Halo, Diamond Band and more
• Matching wedding bands and eternity rings, all crafted to order

Pricing, Certification & After-Sales Benefits

• Typical 1 ct lab-diamond ring starts around £2,300 (spec-dependent)
• 100 % conflict-free stones, individually certified
• Lifetime perks: free resizing, polishing, cleaning and complimentary engraving

Shopping Experience (Online vs In-Store)

• Private consultations in Hatton Garden studio
• Virtual appointments via Zoom or WhatsApp for out-of-town couples
• Three-step design pipeline: concept → CAD → finished ring

Why Choose A Star Diamonds

Perfect for couples who crave creative control and want their ring made on UK soil, backed by craftsmen who stay with you long after “yes” becomes “I do.”

2. 77 Diamonds – Massive Online Inventory & 360° Diamond Viewer

If your ideal shopping trip involves spreadsheets, filters and the ability to spin every stone in high-definition, 77 Diamonds will feel like Christmas morning. The London-headquartered retailer made its name by putting a wholesaler-sized inventory at the fingertips of everyday buyers searching for where to buy lab grown diamonds UK wide.

Snapshot & Stand-Out Points

• Database of roughly 80,000 natural and lab diamonds, refreshed daily
• Showrooms in Mayfair and Manchester for hands-on viewing
• Transparent, real-time pricing that updates with the global market

What You Can Buy

• Loose lab-grown stones from 0.30 ct to 10 ct+
• Customisable engagement rings, wedding bands, pendants and studs
• Settings in 18 ct gold, platinum and recycled metals

Price & Certification

• 1 ct lab diamond from ~£1,600 depending on 4Cs
• All stones come with IGI certificates uploaded to your account dashboard

Buying Journey

• Online ring builder with 360° 20× magnification videos for many stones
• Optional showroom appointment to compare sparkle under professional lighting
• Free insured UK delivery and 30-day returns

Pros, Cons & Ideal Buyer

• Pros: unrivalled choice, data-rich interface, competitive pricing
• Cons: less design hand-holding than boutique makers
• Best for tech-savvy shoppers who like to analyse dozens of options before pulling the trigger.

3. Queensmith – Award-Winning Hatton Garden Workshop

Queensmith blends traditional Hatton Garden craftsmanship with hard-nosed sustainability credentials, so you get artisan build quality wrapped in a lighter carbon footprint. The studio’s trophy cabinet (UK Jewellery Awards “Retailer of the Year”, “Workshop of the Year”) hints at the finish you can expect, while its partnership with SkyDiamond means even the rough carbon is captured from the atmosphere—catnip for eco-minded buyers wondering where to buy lab grown diamonds UK wide.

Company Overview

Independent workshop staffed by in-house goldsmiths, CAD technicians and gemologists; everything is designed, cast and set under one London roof.

Product Range

• Classic solitaire, trilogy and halo engagement rings
• Contemporary knife-edge and bezel styles
• Matching wedding bands and diamond studs

Pricing & Ethics

• 1-ct SkyDiamond ring from roughly £2,600
• 100 % recycled gold and carbon-neutral operations

Customer Experience

Virtual or in-store design consultations, photorealistic 3D renders, and a lifetime manufacturing warranty.

Why It Stands Out

Ideal for couples who want award-level finish and fully documented sustainability without leaving Hatton Garden.

4. Diamonds Factory – High-Street Showrooms Nationwide

Prefer to try on rings at lunch and still enjoy online-level pricing? Diamonds Factory ticks that box with a dozen bricks-and-mortar showrooms from Glasgow to Cardiff, backed by a slick e-commerce platform. The hybrid model means you can browse thousands of specs on your phone, then pop into a local store to see stone size and fire in real life—handy if you’re still deciding where to buy lab grown diamonds UK shoppers trust.

At a Glance

• Started as an online disruptor; now 12 UK showrooms
• Family-owned supply chain keeps margins lean

Inventory & Custom Options

• 700+ ring settings plus earrings, pendants and bracelets
• Loose lab diamonds 0.20–6 ct, all visible in 360° video

Costs, Certification & Policies

• 1-ct lab ring from ~£1,800
• IGI certificates, price-match guarantee, 30-day returns

Shopping Experience

• Mix-and-match ring builder, interest-free finance via Klarna
• Bookable appointments for side-by-side stone comparison

Who Should Buy Here

Great for value-hunters who want national high-street convenience without sacrificing choice or transparent data.

5. Austen & Blake – 60-Day Returns & Lifetime Warranty

Need plenty of time to pop the question or simply want extra peace of mind? Austen & Blake offers one of the longest return windows on the market, marrying e-commerce convenience with four UK showrooms for real-world reassurance.

Brand Snapshot

• Online-first jeweller with studios in London, Manchester, Glasgow and Cardiff.

Jewels on Offer

• IGI-certified lab-grown engagement rings, classic wedding bands and occasion-ready tennis bracelets.

Pricing, Certification & Guarantees

• 1 ct lab ring from around £2,100.
• Lifetime manufacturing warranty plus free resizing for the first year.

Purchase Journey

• Interactive 3D ring studio lets you tweak metal, setting and stone.
• Book an in-store appointment to compare diamonds side-by-side under pro lighting.

Best For

Buyers who value a generous 60-day rethink period and lifetime after-sales cover without paying a premium.

6. Novita Diamonds – Largest Ready-to-Ship Stock in the UK

Need a diamond tomorrow rather than next month? Novita’s business model revolves around physical inventory that’s already in the country, so UK shoppers can handle or have stones dispatched in as little as 24 hours.

Fast Facts

• 600 + lab-grown diamonds on the premises in London and Manchester
• All pieces laser-inscribed and accompanied by IGI or GIA grading reports
• Showrooms open seven days a week for last-minute viewing

Range

• Loose stones up to 8 ct in round, oval, emerald and fancy shapes
• Ready-made solitaire, halo and pave engagement rings that can be re-sized same day
• Matching wedding bands and lab-diamond studs for full sets

Price & Certification

• 1 ct VS2/F lab diamond from ≈ £1,500
• Complimentary valuation certificate for insurance purposes
• 30-day returns and lifetime manufacturing warranty

Buying Experience

• Book 45-minute appointments to view stones under microscope and ideal-cut lighting
• Online checkout with free UK next-day delivery; discreet FedEx packaging

Pros & Cons

• Pros: immediate availability, large high-carat selection, sharp pricing
• Cons: fewer bespoke design tweaks beyond setting choice

Best for proposers on a tight timeline or anyone who wants to see multiple carat sizes in one visit.

7. Taylor & Hart – Design-Centric Bespoke Service

Taylor & Hart made its name by turning love stories into jewellery—engraved sketches, hidden messages and the brand’s signature red thread sapphire tucked inside every ring. That design-first ethos now extends to laboratory-grown diamonds, offering couples full creative freedom without mined-stone price tags.

Company DNA

• Founded in London, expanded to New York; all pieces crafted in the UK
• Signature red-thread sapphire symbolises passion running through every ring

Lab-Grown Offering

• Fully custom engagement rings and wedding bands
• Choice of fancy shapes, coloured lab diamonds and personal motifs

Price & Certification

• 1 ct lab-diamond ring starts around £2,400
• Every stone accompanied by an IGI grading report and laser inscription

Consultation Journey

• Free design sketches within 48 hours, followed by 360° CAD renders
• Virtual or Canary Wharf showroom meetings; 90-day returns on non-engraved items

Ideal Customer

Couples who want story-rich, one-of-a-kind design touches backed by global styling flair and transparent lab-diamond data.

8. Pure Carats – Online-Only, Lab-Only & Carbon Neutral

If you’re wondering where to buy lab grown diamonds UK shoppers can trust without stepping inside a shop, Pure Carats is a solid shout. The company trades exclusively online and deals only in laboratory-created stones, allowing it to funnel savings into greener logistics and sharper pricing.

What Sets Them Apart

• Zero mined diamonds, 100 % lab-grown inventory
• Carbon-offset shipping, plastic-free packaging and recycled paperwork

Products

Engagement rings, eternity bands and minimalist pendants, all built around VS+ stones in round, oval and princess cuts.

Price & Certs

A 1 ct solitaire starts at roughly £1,950. Every diamond carries an IGI report plus laser inscription for peace of mind.

Buying Process

Use slider filters for carat, colour and clarity, then chat live with an on-call gemologist before securing free insured delivery.

Pros & Ideal Buyer

Great for eco-conscious couples seeking mid-range prices, transparent certification and a hassle-free online checkout.

9. Quality Diamonds – Data-Driven Diamond Search Engine

Spreadsheet lovers frequently land on Quality Diamonds. The London-based retailer hosts a searchable database of roughly 600,000 stones with live price feeds and granular filters, making it one of the most analytical answers to the question of where to buy lab grown diamonds UK customers ask.

Snapshot

• Offices in London, Birmingham and Milton Keynes
• Family-run since 2005, online-first approach

Range

Loose lab diamonds in every popular shape, plus build-your-own engagement rings, studs and pendants.

Pricing & Certification

A 1-ct VS2/G lab stone sits around £1,650 thanks to a worldwide price-match pledge; all stones carry IGI or GIA reports.

User Experience

Sort results by cost per carat, depth %, fluorescence and more; many entries include HD 360° videos and ASET imagery; free next-day insured delivery.

Best Suited For

Number-crunchers who want forensic filtering online but still appreciate a physical branch for final checks or resizing.

10. Ethica Diamonds – Cornwall-Based Ethical Pioneer

Cornwall might be better known for surf breaks than sparkle, yet Ethica Diamonds has quietly turned Truro into an ethical-jewellery hotspot. Founded by mother-and-daughter team Elaine and Emily Hall, the business is awaiting B-Corp certification and sticks to planet-first principles from mine-free stones to recycled metals.

Jewellery Offer

• Bespoke and ready-to-wear engagement rings in solitaire, halo and trilogy styles
• Hybrid moissanite crystals plus IGI-certified lab diamonds up to 3 ct

Pricing, Certification & Sustainability

• 1 ct lab ring from about £2,200
• Diamonds grown with renewable energy; rings cast in recycled 18 ct gold; vegan packaging

Buying Journey

• Book virtual or Truro-studio consultations
• Try-at-home sample rings to confirm fit and design before you commit

Who It Suits

Ideal for couples prioritising transparent sourcing, Cornish craftsmanship and seriously low carbon footprints over rock-bottom prices.

11. Lark & Berry – Trend-Led Fine Jewellery With Lab-Only Stones

Lark & Berry was the first British jeweller to go 100 % lab-grown back in 2018. Its Marylebone flagship doubles as a piercing studio and an Instagram-ready backdrop, proving diamonds and street style can happily coexist.

Overview

Founded by entrepreneur Laura Chavez, the label fuses street-style aesthetics with responsibly grown diamonds and recycled gold.

Collections

Expect stackable rings, ear climbers and coloured pavé designed to layer like fashion jewellery.

Price & Certification

Entry-level studs start at £300, while engagement rings begin around £2,500; every stone carries an IGI report.

Shopping Experience

Browse online or in-store, book the “design your piercing” service, and collect loyalty points charmingly dubbed “seeds”.

Key Selling Points

Perfect for style-led shoppers after real diamond sparkle and fashion-forward vibes, minus the mined-stone price tag.

12. Fenton & Co. – Customisable Vintage-Inspired Rings

If your Pinterest board is awash with Art-Deco halos and Gatsby-era three-stones, Fenton & Co. should sit high on your shortlist of where to buy lab grown diamonds UK side. The London DTC label made waves with ethical coloured gems and has now added colourless lab diamonds, marrying 1920s glamour with 2020s transparency.

• Product Range – Three-stone, halo and tapering-shoulder rings you can tweak for metal colour, side-stone shape and setting height.
• Price & Ethics – A 1 ct lab-diamond three-stone costs about £2,850. Rings are crafted in Fairmined gold with a fully traceable supply chain.
• Buying Path – Build online, receive a free home sizing kit, then approve a 3D render before production.
• Who It Suits – Vintage-aesthetic lovers who still want modern ethics and click-to-door convenience.

13. Monica Vinader – Everyday Luxury With Lab-Grown Accents

Monica Vinader delivers attainable sparkle, adding lab-grown diamonds to pieces meant for brunch, boardroom and black-tie alike.

About the Brand

British demi-fine favourite with 50 + UK stockists, known for recycled metals and plastic-free packaging.

Lab-Grown Collection

• Petite solitaire pendants, mini hoops and slim stacking rings featuring VS+ lab diamonds.

Price & Certification

Most items sit between £95 and £650; stones are batch-certified rather than individually graded.

Purchasing Experience

Shop online, click-and-collect or visit boutiques for free engraving while you wait.

Pros & Cons

• Pros: entry-level pricing, chic gift-ready boxes
• Cons: not suited to bespoke engagement rings or high-carat centre stones

14. Beaverbrooks – Trusted High-Street Jeweller Since 1919

Walk into almost any city centre and you’ll spot a Beaverbrooks window sparkling since 1919. The family-owned chain runs more than 80 stores nationwide and now offers IGI-certified “Royal Asscher Crafted by Science” pieces alongside its own-label lab collections. Prices start around £999 for a 0.33-ct solitaire, with 0 % finance up to four years and free clean-and-check services whenever you’re passing. It’s a low-stress answer to where to buy lab grown diamonds UK shoppers can see, touch and insure on the same day.

15. Ernest Jones – Wide Selection & Frequent Sales

A mainstay of British shopping centres, Ernest Jones couples bricks-and-mortar reassurance with percentage-off events that can slash hundreds from headline prices if you time it right.

Quick Facts

• Lab ranges up to 2 ct; entry rings start around £799
• IGI certification supplied on stones 0.50 ct+
• Same-day click-and-collect and 0 % finance for up to four years
• Best for sale-savvy shoppers who still want face-to-face after-sales support

16. Fraser Hart – Education-Forward Retailer With Premium Lines

Fraser Hart blends high-street convenience with a deep educational toolkit, making it a go-to for buyers who want premium sparkle and plenty of hand-holding.

Fast Facts

• 28 bricks-and-mortar stores nationwide
• Robust online guides comparing lab-grown vs mined stones

Products

• Classic solitaire and halo engagement rings, plus matching bands

Price & Certification

• 0.30-ct lab ring from £1,050; all stones IGI-graded

Shopping Experience

• Bookable in-store “diamond lessons”
• AR virtual try-on tool on the website

Stand-Out Benefit

• Ideal for first-time buyers craving structured, expert guidance before committing

17. H.Samuel – Budget-Friendly Chain for Everyday Sparkle

H.Samuel sits at the wallet-friendly end of the diamond spectrum, with more than 300 branches from Aberdeen to Truro and a growing “Together Created Diamonds” line. Rings start at £699 for 0.25 ct centre stones, and while the grading reports are issued by the retailer rather than IGI, you still get VS–SI clarity and an 18-month warranty. Click-and-collect can be as quick as two hours, and a 12-month jewellery protection plan adds accident cover for everyday wear.

18. Blue Nile (UK Shipping) – Global Online Giant With Transparent Data

Blue Nile pretty much wrote the rule-book on buying diamonds online, and its US warehouse now dispatches duty-paid orders to UK addresses in as little as five days. If you’re happy to handle the entire process from laptop to letterbox, it’s one of the most data-rich answers to the question of where to buy lab grown diamonds UK shoppers ask.

• Stock pool of around 500,000 stones, including thousands of IGI-certified lab diamonds
• Build-your-own engagement ring tool with side-by-side spec comparison and HD 360° video
• 1 ct lab diamond from roughly £1,600 (VAT and customs already baked in)
• 24/7 live chat with graduate gemologists, plus phone support until 3 a.m. UK time
• 30-day no-quibble returns with free FedEx pick-up from your doorstep

Best for tech-confident buyers who value granular filters, transparent pricing and don’t need a showroom handshake.

Final Sparkle: Choosing the Right Lab-Grown Diamond Retailer for You

With 18 credible options on the table, the trick is to match the retailer to your priorities rather than chase the lowest headline price. Start by ranking what matters most:

• Bespoke artistry vs off-the-shelf convenience
• In-store try-ons vs fully online checkout
• Budget band (£700, £1,600, £2,800+)
• Sustainability markers (recycled metals, renewable-energy growth)
• After-sales cover (resize windows, lifetime warranties, finance)

Shortlist two or three jewellers that tick the majority of your boxes. Check their sample grading reports, scrutinise return policies, and—crucially—request HD videos or book a showroom consultation before you part with a deposit. A little due diligence here can save a lot of buyer’s remorse later.

If personal guidance and UK craftsmanship top your list, pencil in a no-pressure design chat with A Star Diamonds. Whichever route you choose, may your future diamond shine as brightly as the “yes” it celebrates.