5ct Lab Grown Diamond Engagement Rings

5ct Lab Grown Diamond Engagement Rings

A 5 carat diamond is in a league of its own. Worn by royalty, coveted by collectors, and reserved for those who refuse to compromise — a 5ct diamond engagement ring is the pinnacle of fine jewellery, a stone that stops conversations and starts them in equal measure. With a lab grown diamond, this level of extraordinary is now a reality.

What is a 5ct lab grown diamond?

Lab grown diamonds are chemically, physically, and optically identical to natural diamonds — the same atomic structure, the same Mohs 10 hardness, the same fire and brilliance that has made diamonds the ultimate symbol of love for centuries. Graded and certified by the IGI and GIA to exactly the same standards as natural stones, a lab grown diamond is a real diamond in every sense of the word.

At 5 carats, the financial case for lab grown is compelling beyond argument. A natural 5ct diamond of D/VS quality can command six figures. A lab grown equivalent of identical certification, colour, and clarity is available at a fraction of that price — allowing you to own a stone of truly exceptional scale without the extraordinary premium that rarity alone commands in natural diamonds.

A round brilliant 5ct diamond measures approximately 11mm in diameter — nearly the full width of a little finger. In an oval cut, it reaches around 14–15mm in length. In any cut, it is a stone that speaks for itself.

Our 5ct Lab Grown Diamond Ring Collection

Every ring in this collection is made to order in our Hatton Garden, London workshops, set with a hand-selected 5ct lab grown diamond in your choice of cut — round brilliant, oval, radiant, pear, emerald, cushion, and more. Each diamond is IGI certified and hand-picked by our team for exceptional colour, clarity, and cut performance, ensuring a stone that delivers maximum brilliance and presence.

At this carat weight, the setting matters enormously. Our team will work with you to select the perfect ring design to complement and showcase your 5ct centre stone — whether that’s a clean, architectural solitaire that lets the diamond speak entirely for itself, or a more elaborate setting that frames it with additional brilliance.

Choose your setting, your metal — 18ct yellow gold, white gold, rose gold, or platinum — and your diamond, and we will craft your ring by hand to your exact specifications.

Why choose Alan Bick for your 5ct lab grown diamond ring?

• Every diamond is IGI certified
• Handcrafted in our Hatton Garden, London workshops
• Available in every cut, setting, and metal
• Expert guidance on setting selection for larger stones
• Free resizing after your proposal, with no time limit
• Complimentary engraving
• Retail valuation for insurance included
• Exchange policy if your partner wants a different design
• Showrooms in London and Manchester — view diamonds in person before you buy

A 5 carat diamond demands to be experienced in person. Book an appointment at our London or Manchester showroom and our team will guide you through our 5ct lab grown diamond selection, helping you find a stone and setting worthy of the most significant purchase of your life.