Marquise Cut Lab Grown Diamonds
An elongated, pointed brilliant — the shape that looks largest per carat and lengthens the finger.
What is a marquise cut diamond?
The marquise (or navette, meaning "little boat") is an elongated brilliant cut with two pointed ends. It carries full sparkle and, thanks to its long, narrow shape, has the largest face-up size per carat of any cut — so it looks big and dramatically lengthens the finger.
What to look for in a marquise
- Ratio — the classic marquise sits around 1.85–2.10; choose by taste.
- Point symmetry — the two points should align so the stone doesn't look crooked when set.
- Bow-tie — like all elongated brilliants, check that the dark centre band is minimal.
Use the filters above to set carat, colour, and clarity.
Marquise, Dutch Marquise & French Marquise
The classic marquise has sharp points and bright modern brilliance. If you'd like a softer look, our Dutch Marquise rounds the points, and our French Marquise uses antique faceting for vintage character — three takes on the same elegant navette silhouette.
Marquise engagement rings
A marquise looks striking as a solitaire and pairs well with a protective tip prong (V-prong) to guard its points. Set north-south it elongates the finger; east-west it makes a modern statement. Choose your loose stone here, then build it into the ring of your choice.
Ready for a setting? Explore our Marquise engagement rings.
Why buy a marquise from Stienhardt
Every Stienhardt marquise is independently certified by IGI or GIA, graded for the full 4Cs, and conflict-free — all backed by free 30-day returns.
Marquise Cut Lab Grown Diamonds — frequently asked questions
What is a marquise cut diamond?
An elongated brilliant cut with two pointed ends (also called a navette). It's very sparkly and looks the largest per carat of any shape.
Why do marquise diamonds look so big?
Their long, narrow shape spreads weight across the largest face-up area of any cut, so they look big for their carat weight and elongate the finger.
What length-to-width ratio is best for a marquise?
The classic marquise sits around 1.85–2.10. Lower looks broader, higher looks slimmer — it's down to taste.
What's the difference between a marquise, Dutch Marquise, and French Marquise?
A classic marquise has sharp points and modern brilliance; a Dutch Marquise softens the points; a French Marquise uses antique faceting for vintage character.
Are marquise 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 marquise lab grown diamonds certified?
Yes. Every Stienhardt marquise is independently certified by IGI or GIA and graded for the full 4Cs.
What is the bow-tie in a marquise?
A faint dark band across the centre, common to elongated brilliants. A well-cut marquise keeps it minimal.
What setting suits a marquise?
A solitaire with V-prongs to protect the points works beautifully; set north-south it elongates the finger, east-west it's a modern statement.
Can I set a marquise 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.