Marquise Diamond Guide

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Diamond Shape Guide
The Marquise, Face Up

The Marquise Diamond

No shape in diamonds covers more finger per carat. The marquise is a brilliant stretched to two points, commissioned for a French court and built for drama, and it rewards the buyer who checks exactly two things: the bow-tie in its center and the prongs over its tips.

The Cut

What Defines the Marquise

The marquise is a brilliant cut drawn out to a point at both ends, a boat-shaped outline the trade calls a navette. Legend ties its commission to the court of Louis XV and the Marquise de Pompadour, and the shape has carried that theatrical, aristocratic bearing ever since. Underneath the drama it runs the round brilliant's facet logic, scattering light across its full length.

Its defining talent is spread. The marquise is the most efficient shape in diamonds at converting carat weight into visible surface: a one carat stone stretches more than ten millimeters along the finger, out-measuring every classic shape at the same weight, and its taper elongates the hand the way no other outline can.

Like every elongated brilliant it carries a bow-tie, the dark band that can cross the center where the long facets meet, and it adds one concern of its own: two exposed points. Both are managed easily, the first by video review, the second by the setting, and neither appears on any certificate.

At a Glance

Facets Typically 57 to 58, brilliant style
Cut grading No formal lab cut grade, evaluate by eye
Face-up size The largest spread per carat of any shape
Length to width 1.85 to 2.10 is the classic range
Relative price Meaningfully below round per carat
Watch for The bow-tie, point symmetry, and tip protection
Presence on the Hand

Face-Up Size and Spread

This is the marquise's home game. No shape faces up larger for its weight, and no shape elongates the finger more. Buyers who want maximum visible diamond for the budget end their search here, provided the stone passes its video review.

Carat Weight Typical Measurements How It Wears
0.75 ct 9.5 x 4.7 mm A slender flame, dramatic beyond its weight
1.00 ct 10.5 x 5.3 mm Reads like a far heavier stone on the hand
1.50 ct 12.0 x 6.0 mm Commanding length, unmistakable at a glance
2.00 ct 13.2 x 6.6 mm A full sweep of the finger
3.00 ct 15.2 x 7.6 mm Theatrical presence few shapes can match

Measurements are typical for well proportioned stones. Individual diamonds vary with their cutting.

Reading the Certificate

What to Prioritize on a Marquise Certificate

With no lab cut grade and two pointed tips at stake, the certificate opens the conversation on a marquise and the video finishes it. Here is where your attention belongs.

Demand

Video for the Bow-Tie

Every marquise carries some bow-tie where its long facets meet. On video, a good stone shows a soft shadow that flickers and travels as it moves; a poor one wears a fixed dark band across its middle. The difference never appears on paper, and it is the difference you will live with.

Study

Symmetry Point to Point

The two tips must align on the stone's long axis, and the curves on either side must mirror each other. Look also at the wings, the arcs between point and belly: flat wings make the stone look starved, bulged wings make it look heavy. Even, matching curves are the mark of a fine navette.

Protect

The Points, Always

The tips concentrate both the stone's fragility and its color. Insist on a setting with V-prongs or shrouded claws covering both points, no exceptions, and hold color one thought higher than a round in the same metal, because warmth gathers where the stone narrows.

Every stone we recommend is scored by ROSI™, our gemological intelligence, built by our gemologists, and verified by a human eye before it reaches you. Request a ROSI™ Score Report on any diamond you are considering, ours or anyone else’s.

91.4
ROSI™ Score
Know exactly what a marquise is worth before you buy it.

Found a marquise you are considering, here or anywhere else? Send the GIA or IGI certificate number and our gemological team returns its ROSI™ Score and a read of where it sits in the current market. Complimentary, within minutes.

Score a Diamond
Fair Market ReadSample · Live market data
$4,650This diamond sits here$5,400

Where stones of the same exact specifications are trading on the open market right now. You get a straight answer, even when the diamond is not ours.

Settings

Settings That Flatter a Marquise

The marquise brings length and drama; the setting's job is to protect the points and decide the mood. These three directions cover most of what our clients choose, each made to order around your exact stone.

1

The Six-Prong Solitaire

Four prongs on the belly, a V-prong guarding each point. The classic marquise mount: secure at the tips, minimal everywhere else, all length on display.

2

The East-West

The navette turned sideways across the finger, modern and unexpected. The shape's drama becomes a horizon line, and the look belongs to buyers who chose deliberately.

3

The Hidden Halo

Pavé tucked beneath the stone, invisible face-on, glinting in profile. Presence without touching the clean sweep of the outline.

An Honest Word
The marquise gives you the most diamond your money can show. In exchange it asks for a video and a proper pair of prongs.

We will say it plainly: per carat of visible presence, nothing beats a marquise, and its price per carat sits well below the round's. The costs are specific and manageable. The bow-tie must be judged on video of the exact stone, because certificates are silent about it. The two points must live under V-prongs for life, because tips are where diamonds chip. And the wearer should love drama, because this shape does not do quiet. Meet those three terms and the marquise repays them every single day; skip the video or the prongs and you have bought the shape's reputation instead of its reward. Either way, we will tell you which stone you are looking at before you commit.

Only at RockHer

What We Offer That No Other Website Will

We are a Los Angeles fine jewelry atelier with family roots in the diamond trade going back to 1967. That history buys you four things you will not find together anywhere else.

A score on anyone’s diamond

Send us the certificate of a stone we do not sell and we will still score it. No other jeweler will grade a competitor’s diamond for you and tell you if it is the better buy.

A fair market read, not a pitch

Every ROSI™ report shows where stones of identical specifications are trading right now, drawn from live market data. You see the range before you see our price.

A gemologist, not a chatbot

Every score is verified by our gemological team before it reaches you, and John Anderson, our Lead Gemologist, is one phone call away for the questions a report cannot answer.

A ring made to order for your stone

Every setting leaves our Los Angeles atelier built around your exact diamond, at one confident price, with 40 day returns and 60 day complimentary resizing behind it.

RockHer Ideal

The Proportions We Accept in a Marquise

Our gemologists buy inside a written window, and decline outside it. These are those numbers, published in full, so you can hold any marquise to the same standard we do, including one you are considering somewhere else.

The marquise carries two points and the longest outline of any shape we stock, which makes symmetry the first thing to read. Both halves must mirror each other, and both points must align on the long axis.

The Window at a Glance

Length to width1.75 to 2.05
1.272.53
Depth58 to 65%
50%80%
Table56 to 65%
50%80%

Each scale shows the measurement range. Gold marks the RockHer Ideal window.

RockHer Ideal, Marquise

Length to width ratio 1.75 to 2.05
Depth 58% to 65%
Table 56% to 65%
Girdle Thin to thick
Polish Very Good or better
Symmetry Good or better
Culet None
In the Diamond Search

Where to Find This Switch

Every diamond in our search carries these measurements on its report. In the filter panel, under RockHer’s Best, switch on Ideal Cut and the results narrow to the window above. Super Ideal Cut narrows them further still, to a tighter standard our gemologists hold diamond by diamond rather than publish as a range.

Nothing is hidden behind the switch. It applies the same numbers printed on this page.

Open the Marquise diamond search
RockHer’s Best
Super Ideal Cut
Ideal Cut

The panel as it appears in the diamond search, with Ideal Cut switched on.

Beyond the Numbers

What We Decline Regardless of Grade

Proportion is the first filter, not the last. A marquise can sit inside every range above and still be one we will not sell. These findings end a purchase in our office whatever the certificate says, and every diamond scored by ROSI™ is read against them by a gemologist before it is offered.

  • Knots, cavities, and etched channels
  • Chips, unless the remaining structure is sound
  • Indented naturals visible from the crown
  • Naturals or feathers at a corner or a point
  • Chipped culets
  • Twinning wisps
  • Surface or internal graining that sets the clarity grade, is visible to the eye, or interferes with light return
  • A brown or grey cast in the face-up view
A certificate tells you what was measured. It does not tell you what was rejected.

Two marquise diamonds can carry the same carat, color, clarity, and grading laboratory, and one of them will never reach a client of ours. That gap is the work: reading the plot, the finish, and the face-up appearance against a written standard rather than against a price.

Questions

Marquise Diamond Questions, Answered

Do marquise diamonds look bigger than other shapes?
Yes, and it is not close. The marquise spreads its weight across the longest outline in diamonds, so a 1 carat stone measures roughly 10.5 by 5.3 millimeters and dominates a round of equal weight on the hand. For buyers ranking visible size per dollar first, the marquise is the mathematical answer.
What is the bow-tie in a marquise diamond?
A dark band that can appear across the center of any elongated brilliant, caused by light leakage where the long pavilion facets meet. Every marquise has some. In a well cut stone it is a faint, moving shadow; in a poorly cut one it is a fixed dark stripe. It never appears on the certificate, which is why video review of the exact stone is non-negotiable on this shape.
What is the best length to width ratio for a marquise diamond?
The classic window is 1.85 to 2.10, with most buyers happiest near 2.00: unmistakably elongated without going needle-thin. Below 1.80 the stone reads plump, above 2.20 slim and dramatic. Judge the ratio on your own hand, and check that the wings curve evenly at whatever ratio you choose.
Do marquise diamond points chip easily?
The points are the stone's most vulnerable feature, which is why they are never left exposed. A properly made setting covers each tip with a V-prong or shrouded claw, and once protected, a marquise wears as durably as any brilliant. We build every marquise setting with covered points as standard, not as an option.
Are marquise diamonds less expensive than rounds?
Meaningfully so per carat. The navette outline uses elongated rough efficiently and demand sits below the round's, so the same budget buys more weight, which the shape then displays more generously than anything else. The combination is why the marquise is the quiet champion of visible diamond per dollar.
Is a marquise diamond a good choice for an engagement ring?
For a wearer who loves drama and length, one of the boldest and best value choices in diamonds. It maximizes finger coverage, elongates the hand, and prices below the round. Its terms: choose the stone on video for the bow-tie and symmetry, and never accept a setting that leaves the points uncovered. Meet them and the marquise is unforgettable.
What is the RockHer Ideal window for a marquise diamond?
Depth of 58% to 65%, table of 56% to 65%, a length to width ratio of 1.75 to 2.05, polish very good or better, symmetry good or better, and a culet graded none. Those are the proportions our gemologists buy inside. In the diamond search, the Ideal Cut switch under RockHer’s Best removes every marquise that falls outside them.
Does a certificate inside the RockHer Ideal window guarantee a beautiful marquise?
No. Proportion narrows the field, it does not finish the job. A marquise can measure perfectly and still carry graining that sets its clarity grade, a chipped culet, or a brown cast in the face-up view. None of those appear as a number on a report, which is why every diamond we ship is scored by ROSI™ and then reviewed by a human eye against a written rejection standard.
Talk to a Jeweler

Considering a marquise? Let a gemologist look first.

John Anderson, our Lead Gemologist, reviews marquises with clients every day. Send him the certificate of any stone you are considering and he will tell you what the paper says and what it leaves out. The consultation is complimentary and there is no obligation.

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