5 Carat Lab-Grown Diamonds
A red-carpet show-stopper — about 11mm across in a round, the clearest lab-grown value story there is.
How big is a 5 carat lab grown diamond?
A 5 carat round measures roughly 11mm across — true red-carpet, show-stopping size that fills the finger. A mined 5 carat is the stuff of celebrity jewellery; lab grown is what makes a stone this size a real, attainable choice.
How much does a 5 carat lab grown diamond cost?
This is the clearest lab-grown value story of all: a mined 5 carat runs into six figures, while a lab grown 5 carat delivers the identical look for a small fraction. Price still varies with the 4Cs, so filter the live collection above to see real numbers for your preferences.
Getting the most from 5 carats
- Cut first — at 5 carats a precise cut is essential to keep a large stone brilliant and lively.
- Colour & clarity — a stone this big shows everything, so favour G+ colour and eye-clean clarity.
- Shape — elongated cuts wear even larger, while a round maximises fire.
Use the filters above to dial it in.
5 carat engagement rings
A 5 carat is the ultimate statement centre stone. It needs a secure, substantial setting and a band proportioned to carry it. Choose your loose stone here, then build it into the ring of your choice.
Why buy a 5 carat from Stienhardt
Every Stienhardt diamond is independently certified by IGI or GIA, graded for the full 4Cs, and conflict-free — all backed by free 30-day returns.
5 Carat Lab-Grown Diamonds — frequently asked questions
How big is a 5 carat lab grown diamond?
A 5 carat round is about 11mm across — true show-stopping size that fills the finger.
How much is a 5 carat lab grown diamond?
A small fraction of a mined 5 carat, which runs into six figures. Filter the collection above to see live prices for your 4C choices.
Why is a 5 carat so much cheaper lab grown?
A mined 5 carat is extraordinarily rare and priced accordingly. Lab grown isn't supply-limited, so even this size is attainable.
Does a 5 carat diamond look big?
Very — at about 11mm it's a red-carpet show-stopper, and elongated shapes look larger still.
What colour and clarity should I choose for a 5 carat?
A stone this size reveals everything, so favour G or better colour and eye-clean clarity.
Which shape looks biggest at 5 carats?
Elongated shapes — oval, marquise, emerald, pear — wear the largest; a round maximises fire.
Are 5 carat lab grown diamonds real diamonds?
Yes — they're real diamonds, chemically and optically identical to mined stones, and recognized as diamonds by the FTC.
Are 5 carat lab grown diamonds certified?
Yes. Every Stienhardt diamond is independently certified by IGI or GIA and graded for the full 4Cs.
Can I set a 5 carat into an engagement ring?
Absolutely. Choose your loose stone, then pick a setting and we'll mount it for you.
What is your return policy?
Free 30-day returns on diamonds and jewelry.