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Round brilliant diamond halo engagement ring with a diamond-set band, worn on a woman's hand at home
Find your brilliance
53,000+ jewellery designs. 1 million+ natural & lab-grown diamonds.
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Design your own ring
Choose the shape, setting, band and metal, and watch your ring change in 3D.
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A jeweller polishing a gold oval diamond three stone ring at the workshop bench
Made in house
Designed by us. Crafted by us. Exceptional jewellery, direct to you.
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Your Perfect Diamond Ring

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Free insured UK delivery
Your Jewellery, Delivered With Care
Free insured UK delivery
Your Jewellery, Delivered With Care
Free insured UK delivery
Your Jewellery, Delivered With Care
Free insured UK delivery
Your Jewellery, Delivered With Care
Free insured UK delivery
Your Jewellery, Delivered With Care
Crafted to Exceptional Standards
Precision in every detail. Pride in every piece. Quality you can trust. We talk to our customers.
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A Family Company
Finest jewellery, designed and crafted since 1969. As seen on Dragons’ Den. The UK’s first online jeweller.
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Best Price Guarantee
Our AI scans the market. You discover the difference. Exceptional quality. Outstanding value. Complete confidence.
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Hassle-Free Returns
Your perfect ring. Our promise to make it right. 30-day returns and a free first resize. Buy with confidence.
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Round Brilliant Cut
57 facets • Timeless classic with maximum sparkle
Round Brilliant Cut diamond
589,808
Round Brilliant Cut diamonds listed today
Certified
Natural Diamonds
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Lab-Grown Diamonds
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Coloured Diamonds
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Certified Diamonds Detailed Listing & Price Comparison

Discover your ideal diamond, beautifully priced, transparently sourced, and ready to choose.

  • Powerful, fast search across all diamond types
  • Aggressive, comparative pricing for every budget
  • Diamond Experts on hand to help
  • See every detail clearly with diamond video and full certification
  • Buy with confidence backed by trusted sourcing and full transparency

Explore All Diamond Shapes

Exceptional Diamond Rings and Diamond Jewellery

Discover Beautifully Crafted Diamond
Rings & Jewellery for Every Occasion

From diamond engagement rings and diamond-set wedding bands to plain wedding rings and exquisite diamond jewellery, discover pieces to treasure for a lifetime.

Talk to us +44 1451 810595

  • Oval, round, heart, pear and emerald cut diamond engagement rings in platinum, rose and yellow gold, stacked on a sandstone block

    Engagement Rings

    Discover diamond engagement rings in classic and contemporary styles. Choose natural or lab-grown diamonds to create a ring that tells your love story.

    Shop Engagement Rings
  • Diamond eternity rings on a wooden jeweller's bench

    Eternity Rings

    Celebrate a special milestone with a diamond eternity ring. Explore designs to wear beautifully on their own or alongside your wedding and engagement rings.

    Shop Eternity Rings
  • Pear and oval bezel-set diamond stud earrings in yellow gold, with round claw-set and round halo diamond studs in white gold, on cream silk

    Diamond Earrings

    Diamond stud, drop and halo earrings with natural or lab-grown diamonds. Compare stone shapes, sizes and metals, from everyday studs to statement drops.

    Shop Diamond Earrings
  • Four diamond pendants on rose, yellow and white gold chains on a jeweller's bench

    Diamond Pendants

    Solitaire, drop and contemporary diamond pendants with natural or lab-grown diamonds, in platinum and gold. A piece to wear every day or give as a gift.

    Shop Diamond Pendants
  • Round diamond tennis bracelet in 18ct yellow gold on a woman's wrist, her hand resting on a brass handrail

    Tennis Bracelets

    Compare diamond tennis bracelets by total carat weight, metal and setting style. Explore different stone sizes and proportions to suit your wrist and budget.

    Shop Tennis Bracelets
  • Wedding rings on black glass: a wavy pavĂ© diamond band, a white and rose gold baguette band, a hammered yellow gold band and a baguette band with rope edges

    Wedding Rings

    Plain, diamond-set and designer wedding rings in platinum and gold, for her and for him. Design your own band or find one to sit beside your engagement ring.

    Shop Wedding Rings
  • Men's wedding bands on a jeweller's bench: a screw-detail band, a wave-pattern band, a ridged band and a rose and white gold link band

    Men’s Rings & Wedding Bands

    Men’s wedding bands and diamond rings with clean lines, distinctive textures and considered finishes, in platinum and gold.

    Shop Men’s Rings
  • Christmas presents wrapped in red and gold under the tree, for diamond jewellery gift ideas

    Christmas Gifts

    Browse diamond jewellery for Christmas, including rings, earrings, pendants and bracelets. Find gift ideas or show someone exactly what you have in mind.

    Shop Christmas Gifts

A UK family jeweller since 1969

Comparethediamond.com is a trusted UK-based, family-run diamond jewellery specialist with over 57 years of expertise in designing and manufacturing high-quality diamond engagement rings, wedding rings and fine diamond jewellery. The first online jeweller in the UK, using the ’Net since 1988 and selling online since 1994 and as seen on Dragons’ Den, we combine a long-standing family tradition with an innovative approach to buying diamonds and manufacture of fine diamond jewellery.

We help customers make confident, informed decisions through expert guidance, exceptional craftsmanship and fully transparent pricing. Our bespoke design service, ethically sourced diamonds and direct-to-consumer approach deliver outstanding value without compromise.

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Hints for ChristmasHigh-EndEngagement RingsCollections
53K+DESIGNS
1.3M+DIAMONDS LISTED
< 48 hoursDESIGN TURNAROUND
57 yearsFAMILY FIRM
HOW IT WORKS

Bespoke Design, your ideas brought to life!

With tens of thousands of designs to choose from on our website, one in five of our sales is still bespoke—a piece designed and created from the ground up, with expert guidance at every step.

Working closely with you makes the shopping experience deeply personal, especially when choosing something as meaningful as an engagement ring or a special piece of jewellery to mark a treasured occasion. The result is a stunning piece made just for you. You will be the first person to put it on!

Drawing on over half a century of traditional experience in the design and manufacture of fine jewellery, we combine personal expertise with AI and the most sophisticated design systems to make bespoke, designer jewellery simple, fast, efficient and exciting. From design inspiration to delivery, every step is tracked, managed and reported, making you part of the process.

01

Your Move

Upload a scribble, an idea, photographs or an AI design

02

Design Brief

We chat, explore, understand and define

03

CAD & Renders

Photo-realistic video within 48 hours for your approval

04

Manufacture

A blend of technology and traditional hand-craft

Next Stage

It’s a fun and exciting experience to treasure

From the Blog

What Is an Eternity Ring? Meaning, When to Give One and How to Wear It
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What Is an Eternity Ring? Meaning, When to Give One and How to Wear It
An eternity ring is a band set with a continuous line of diamonds or gemstones. The unbroken row stands for love that never ends, which is why it is s..
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The Ultimate Ring Setting Guide: 10 Styles Decoded
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The Ultimate Ring Setting Guide: 10 Styles Decoded
Whether you’re hunting for the perfect engagement ring or treating yourself to a new piece of fine jewellery, the setting is just as important as the ..
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The Long Game: Why Elongated Diamond Shapes Are Dominating the Scene
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The Long Game: Why Elongated Diamond Shapes Are Dominating the Scene
If you’ve been scrolling through your social media feeds lately, you might have noticed a significant shift in the jewellery world. While the classic ..
Continue reading
The Grown-Up’s Easter Egg: A New Season of Brilliance
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The Grown-Up’s Easter Egg: A New Season of Brilliance
Forget the foil-wrapped chocolate. This year, we’re celebrating a different kind of sweetness—one that doesn’t melt but instead captures the very esse..
Continue reading
The Geometry of the Stars: Matching Your Diamond Cut to Your Elemental Sign
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The Geometry of the Stars: Matching Your Diamond Cut to Your Elemental Sign
In a world of fast fashion and fleeting trends, the diamond remains our most permanent anchor. But in 2026, we’re looking for more than just "carat we..
Continue reading
Recommissioning Jewellery: Give Old Pieces a New Life
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Recommissioning Jewellery: Give Old Pieces a New Life
Most of us have jewellery we no longer wear: a ring that has fallen out of style, a broken chain, or pieces passed down from a grandparent. Recommissi..
Continue reading

Why People Choose Us

Yes. Buying diamonds online is no longer a leap of faith — it is simply a smarter, better-protected way to buy. With detailed images, expert guidance, secure payment, insured delivery and a 30-day return policy, you can choose an important diamond or piece of jewellery with complete confidence.

Paying by credit card gives you valuable extra protection when buying diamond jewellery online. It also allows us to send your chosen piece securely to your door, so you can inspect it properly before your card statement is due.

Yes. Our 30-day return policy means you can view your diamond, engagement ring or fine jewellery at home, in your own time. Think of your card payment as a secure bond that allows us to send you a valuable piece on approval, with time to make a calm and confident decision.

Yes. UK online shopping rules give customers strong protection when buying from a specialist online jeweller. In many ways, buying jewellery online can offer more reassurance than buying on the High Street, because distance-selling rules are designed to protect the customer.

Buying jewellery online can give you more choice, clearer pricing, stronger consumer protection and the time to make a considered decision. You are not rushed in a shop, pressured by a salesperson or limited to the stock in one display cabinet.

Absolutely. We are a family firm of designer/makers 56 years in the business and a people-focused jewellery company, not a faceless website. We speak to our clients regularly, guide them through the buying process and help them make confident decisions about diamonds, engagement rings and fine jewellery.

Yes. We keep you fully informed from start to finish. Our clients are part of the process and always know what stage their order has reached, from design and production through to final checking and secure delivery.

Yes. You are very welcome to visit us in the beautiful Cotswolds by appointment. We serve excellent coffee, offer friendly expert advice and would be delighted to help you choose the perfect diamond or piece of jewellery.

To arrange a visit, please phone +44 1451 810595.