Why does a marquise diamond look larger than other shapes of the same carat weight?

The marquise has one of the largest crown surface areas of any diamond shape. Its elongated outline spreads the diamond's weight across a larger visible area, making it appear bigger face-up than almost every other cut of the same carat weight.

What is the ideal length-to-width ratio for a marquise diamond?

The preferred length-to-width ratio for a marquise diamond is 1.75 to 2.00. This range produces a well-balanced elongated outline. Ratios outside this range may look either too short and wide or too narrow and elongated.

What is the ideal Table% for a marquise diamond?

The ideal Table% for a marquise diamond is 55% to 62%. This range balances fire and brilliance, ensuring the stone reflects light effectively.

What is the ideal Depth% for a marquise diamond?

The ideal Depth% for a marquise diamond is 58% to 64%. Stones within this range optimise light performance without appearing too deep or too shallow.

LAB CREATED DIAMONDS

Marquise Cut Diamonds

Q: How important is symmetry in a marquise diamond?

Symmetry is critical in a marquise diamond. The two pointed tips must align perfectly with each other, and the left and right sides must mirror each other exactly. Any deviation is immediately apparent once the stone is set. Like ovals and pears, marquise diamonds also exhibit a bow-tie effect that varies from near-invisible to severe — always use the proportions as your primary buying guide.

The marquise has one of the largest crown surface areas of any diamond shape — carat for carat, it faces up bigger than almost every other cut. Its 56 facets are arranged in an elongated football shape that terminates in two points, creating a bold, dramatic outline with a strong finger-lengthening effect.

Symmetry is critical with a marquise. The two points must align perfectly with each other, and the left and right sides must mirror each other exactly — any deviation is immediately apparent once the stone is set. Like ovals and pears, marquise diamonds exhibit a bow-tie effect that varies from near-invisible to severe, making the proportions table below your most reliable buying tool.

Beyond the 4Cs: Use the
proportions table to identify the
finest stones in our collection.

Proportion	Ideal range	Why it matters
Table %	55% – 62%	Balances fire and brilliance
Depth %	58% – 64%	Optimises light performance
Length to width	1.75 – 2.00	Preferred ratio
Polish & symmetry	Excellent	Symmetry is critical for visual appeal
Girdle	Thin – Slightly thick	Protects the two fragile points