Oval Cut Lab-Grown Diamonds
A brilliant-faceted oval — round-level sparkle in an elongating shape that looks larger per carat.
What is an oval cut diamond?
The oval is a brilliant cut — the same fiery faceting as a round, drawn into an elongated, rounded shape. You get round-level sparkle with two bonuses: the long outline flatters and elongates the finger, and an oval looks larger per carat than a round of the same weight. It's one of the most popular shapes for exactly these reasons.
What to look for in an oval
- Ratio — most ovals look best around 1.35–1.50; lower is rounder, higher is slimmer.
- Bow-tie — every oval has a faint dark band across the centre; a well-cut stone keeps it minimal. Look for an even, lively face.
- Symmetry — the two ends and sides should mirror each other.
Use the filters above to set carat, colour, and clarity.
Why ovals look bigger
Because weight is spread across a longer surface rather than packed into a deep round, an oval presents a larger face-up size for the same carat. Pair that with the elongating effect on the hand and you get maximum presence for your budget — a big part of the oval's appeal.
Oval engagement rings
Ovals suit almost everything — solitaires, halos (which make them look even larger), three-stone, and east-west settings. Choose your loose stone here, then build it into the ring of your choice.
Ready for a setting? Explore our Oval engagement rings.
Why buy an oval from Stienhardt
Every Stienhardt oval is independently certified by IGI or GIA, graded for the full 4Cs, and conflict-free — all backed by free 30-day returns.
Oval Cut Lab-Grown Diamonds — frequently asked questions
What is an oval cut diamond?
A brilliant cut with the same fiery faceting as a round, drawn into an elongated, rounded shape — sparkly, flattering, and larger-looking per carat.
Do oval diamonds look bigger than round?
Yes — weight is spread over a longer surface, so an oval shows a larger face-up size than a round of the same carat, and it elongates the finger.
What is the bow-tie in an oval diamond?
A faint dark band that can appear across the centre of elongated cuts. Every oval has some; a well-cut stone keeps it minimal.
What length-to-width ratio is best for an oval?
Most look best around 1.35–1.50. Lower looks rounder and fuller; higher looks longer and slimmer — it's down to taste.
Are oval 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 oval lab grown diamonds certified?
Yes. Every Stienhardt oval is independently certified by IGI or GIA and graded for the full 4Cs.
Do ovals sparkle as much as round diamonds?
Nearly — the oval uses brilliant faceting like a round, so it's very sparkly, with the bonus of an elongating shape.
What setting suits an oval?
Solitaires, halos (which enlarge the look), three-stone, and east-west settings all flatter an oval.
Can I set an oval 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.