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JOUWELL
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Marquise diamonds, lab-grown and natural

No shape looks bigger for its weight: a 1 ct marquise is about 10 mm long. It is a bold, dramatic choice, with a bow tie to check on video and two tips to protect.

Every marquise we sell is certified by GIA, IGI or HRD and has a 360° video, so you can check its bow tie and its symmetry before you buy.

See marquise diamonds in stock Compare with other shapes

01 · In stock now

Marquise diamonds you can buy today

Picked from stock by score, 1 to 3 carats, each with a 360° video. Prices in CAD, duties included.

See all 25,279 marquise diamonds, 1–3 ct

02 · Sizes by carat

Marquise diamond sizes, in millimetres

Typical face-up size, next to a round of the same weight. Real stones vary with how deep they are cut, so always check the measurements on the certificate.

Carat Marquise, length × width Round, diameter
0.5 7.5–8.3 × 3.7–4.2 mm 5.1–5.2 mm See in stock
1 9.5–10.5 × 4.7–5.3 mm 6.4–6.5 mm See in stock
1.5 10.9–12.0 × 5.4–6.1 mm 7.3–7.4 mm See in stock
2 12.0–13.2 × 5.9–6.7 mm 8.1–8.2 mm See in stock
3 13.7–15.1 × 6.8–7.6 mm 9.2–9.4 mm See in stock
4 15.1–16.7 × 7.5–8.4 mm 10.2–10.3 mm See in stock
5 16.2–18.0 × 8.0–9.1 mm 10.9–11.1 mm See in stock
  • 0.5 ct
  • 1 ct
  • 1.5 ct
  • 2 ct
  • 3 ct
  • Round 1 ct

Drawn at actual size on most computer screens at 100% zoom. To compare with any other shape, or see it on your ring size: open the shape comparer.

Our advice

“No shape looks bigger per carat: a 1 ct marquise is about 10 mm long. It’s a bold choice, so pick it because you love it, and protect both tips.”

Jouwell, Montreal

03 · Questions

Marquise diamond questions

Does a marquise look bigger than other shapes?

Yes, it looks the biggest for its weight. A 1 ct marquise is about 9.5 to 10.5 mm long; a 1 ct round is about 6.5 mm across.

Do marquise diamonds have a bow tie?

Most do. A light one that moves as the stone turns is normal; a broad, dark one that stays put is what to avoid. Only video shows the difference.

Are the tips of a marquise fragile?

They are its weakest points. V-prongs on both tips, or a bezel, protect them.