When your love is bold and undeniable, your ring should be too. Our 4 Ct lab-grown diamond engagement rings, crafted in 100% solid 14K & 18K gold, are made to turn heads and capture hearts. Each ring is set with an IGI-certified lab-grown diamond, offering jaw-dropping brilliance and presence, without the inflated price tag or ethical compromise.

Every piece is handcrafted, hypoallergenic, and shipped free across the UK, arriving in tamper-proof packaging with full certification. This is fine jewellery that celebrates love in the most extraordinary way.

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    History, Types, Cultural Significance Of 4 Ct Lab-Grown Diamond Engagement Ring

    A 4 ct diamond is nothing short of extraordinary. It’s bold, radiant, and unforgettable—perfect for those who want their engagement ring to reflect a powerful, once-in-a-lifetime kind of love. And with lab-grown diamonds, you get the size and sparkle of your dreams—without overpaying or compromising your values.

    At The Karat Store, our 4-carat engagement ring collection includes:

    • Solitaire rings in oval, round, cushion, emerald, and princess cuts

    • Halo and double-halo styles for maximum brilliance

    • Three-stone rings that add balance and symbolism

    • Split-shank, cathedral, and twisted bands for added detail

    • Fully customizable options for your unique love story

    UK shoppers choose lab-grown for good reason: these diamonds are chemically and visually identical to mined diamonds, yet sustainably created and more affordable. You get the best of both worlds—impact, intention, and incredible beauty.

    Quality of Material Used

    We never use gold-plated or filled metals. Every engagement ring is made in 100% solid 14K & 18K gold, available in your choice of yellow, white, or rose gold. Durable, luxurious, and timeless—this is real gold, made to last forever.

    Each lab-grown diamond is hand-selected for its fire, clarity, and cut, then securely set by expert artisans. All rings are hypoallergenic and nickel-free, making them perfect for daily wear, even on sensitive skin.

    Certifications Provided

    With every 4 ct engagement ring, you’ll receive:

    • An IGI certificate confirming cut, colour, clarity, and carat

    • A 14K & 18K gold purity stamp

    • A detailed invoice and complete documentation

    Buying from The Karat Store means you get certified, transparent, and traceable luxury—no surprises, just pure brilliance and confidence.

    Craftsmanship

    Each engagement ring is carefully handcrafted by skilled artisans who specialise in fine jewellery. From prong setting to final polish, every step is done with precision and passion.

    Before shipping, every ring is subjected to a multi-step inspection process, ensuring perfect structure, smooth finishing, and securely set stones. You’ll see the craftsmanship the moment it’s in your hands.

    Frequently Asked Questions

    1. How long does shipping take to the UK?
    Shipping takes 12 to 22 days to your doorstep in the UK.

    2. Are the gold and diamond real?
    Yes. We use 100% solid 14K & 18K gold and IGI-certified lab-grown diamonds, identical to mined diamonds in every way.

    3. Why choose a 4 ct lab-grown diamond?
    You get exceptional size, sparkle, and value—all with sustainable, ethical origins.

    4. Will I receive a certification with my ring?
    Yes, your purchase includes an IGI certificate, gold stamp, and full documentation.

    5. Can I return the ring if I don’t love it?
    Returns are accepted only for damaged items or if the wrong product is delivered.

    6. Is shipping free in the UK?
    Yes, we offer free shipping nationwide.

    7. Will I receive tracking details?
    Absolutely. A tracking number will be provided once your ring ships.

    8. Can I customize the setting or diamond shape?
    Yes! We welcome custom orders—just email us with your design preferences.

    9. Are your rings safe for sensitive skin?
    Yes. All rings are nickel-free and hypoallergenic, perfect for everyday wear.

    10. How do I contact The Karat Store?
    Reach us anytime at contact@thekaratstore.uk for support, custom requests, or design consultations.