French Marquise Lab-Grown Diamonds
A marquise silhouette with antique French faceting, for softer, vintage-inspired flashes and old-world character.
What is a French Marquise diamond?
A French Marquise keeps the classic elongated, pointed marquise (navette) outline but uses antique-style French faceting — a more old-world facet arrangement that gives the stone softer, more romantic flashes and distinct vintage character compared with a modern brilliant marquise.
French Marquise vs. classic and Dutch marquise
A modern marquise is cut for bright, contemporary brilliance. A Dutch Marquise softens the points. A French Marquise changes the faceting itself — leaning antique and understated, with a glow that suits vintage-inspired settings. Three takes on the same elegant navette silhouette.
What to look for in a French Marquise
- Length-to-width ratio — most look best between about 1.85 and 2.10; choose by taste.
- Point symmetry — the two ends should align so the stone sits straight.
- Bow-tie — check that any dark band across the centre is minimal.
Use the filters above to set carat, colour, and clarity.
French Marquise engagement rings
The elongated outline flatters the finger and looks larger per carat than rounder cuts, while the antique faceting pairs beautifully with vintage-inspired and milgrain settings. Choose your loose stone here, then build it into the ring of your choice.
Why buy a French Marquise from Stienhardt
The French Marquise is a specialty cut few jewellers offer. Every Stienhardt stone is independently certified by IGI or GIA, graded for the full 4Cs, and conflict-free — all backed by free 30-day returns.
French Marquise Lab-Grown Diamonds — frequently asked questions
What is a French Marquise diamond?
A marquise (navette) shape cut with antique-style French faceting, giving softer, more vintage flashes than a modern brilliant marquise.
How is a French Marquise different from a regular marquise?
Same elongated, pointed outline, but the French faceting is more antique and understated, for a vintage glow rather than bright modern brilliance.
What's the difference between a French Marquise and a Dutch Marquise?
A Dutch Marquise softens the points; a French Marquise changes the faceting to an antique French style. Both are takes on the marquise silhouette.
Are French 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 French Marquise lab grown diamonds certified?
Yes. Every Stienhardt French Marquise is independently certified by IGI or GIA and graded for the full 4Cs.
What length-to-width ratio is best for a French Marquise?
Most look best between roughly 1.85 and 2.10 — lower looks broader, higher looks slimmer. It comes down to taste.
Do French Marquise diamonds look bigger than other shapes?
Yes — the elongated shape spreads weight across a larger surface, so it tends to look larger per carat and elongates the finger.
What setting suits a French Marquise?
Vintage-inspired, milgrain, and slim solitaire settings all complement its antique character. A protective tip can guard the points.
Can I set a French 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.