Marquise cut diamonds are having the kind of year a shape gets maybe twice a century. The elongated, pointed outline that eighteenth century cutters called a navette has moved out of the estate case and onto the shortlist of people buying their first serious ring.

The data agrees with the feeling. According to National Jeweler's 2026 engagement ring trend report, which drew on The Knot's 2026 Real Weddings Study of more than 10,000 American couples, the marquise now accounts for 8 percent of engagement ring center stones, level with emerald, pear and princess. Katelyn Meche, director of bridal at Stuller, told the same publication that emerald, marquise and elongated cushion have grown faster than any other shapes over the past year. This guide covers what actually matters when you buy one: the ratio, the bow-tie, the points, and the price.

What Makes a Marquise Cut Diamond Different

A marquise cut diamond is a 58 facet brilliant with an elongated, boat shaped outline and a point at either end, cut so that a given carat weight spreads across more face-up surface than any round of the same size. That single structural fact explains almost everything else about the shape: why it looks larger than its carat weight suggests, why it lengthens a finger, and why its two tips need thinking about.

The outline is old. GIA's marquise buying guide traces it to eighteenth century France, where legend holds that Louis XV commissioned a cut in the 1740s modeled on the lips of the Marquise de Pompadour. Cutters still call it the navette, Old French for little ship. It ran through the Edwardian era, surged again in the 1970s, then handed its crown to the princess cut. Its return is not nostalgia so much as arithmetic: a shape that reads big, costs less per visible millimeter, and looks nothing like the round everyone else is wearing.

Marquise Diamond Length to Width Ratio: Picking Your Outline

The classic marquise length to width ratio is 2:1, and GIA reports that most marquise diamonds submitted to its laboratory fall between 1.6:1 and 2.2:1. Within that window the shape changes character completely, and no ratio is objectively correct. What follows is how each band actually reads on a hand.

GIA notes that longer ratios are harder to cut while holding face-up brightness, and that very short marquises can look stubby. If you are moving across from another elongated shape, our guide to pear shaped diamonds covers the same tradeoffs with a softer outline and no points to protect.

The Bow-Tie, and Why Every Marquise Has One

Nearly every marquise cut diamond shows a bow-tie, a dark hourglass shadow lying across the center of the stone, and a faint one is not a defect. It appears because the viewer's own head and shoulders block the light that those central facets would otherwise return. "A slight bow-tie is considered normal and can even add visual depth and contrast to a marquise diamond," GIA writes in its marquise diamond buying guide. A stone with no bow-tie at all can look flat.

What you are screening for is the other kind: a bow-tie that is wide, very dark, and stubbornly present no matter how the stone moves. Very shallow or very deep pavilions make it worse. This is also why no laboratory issues a cut grade for the shape. Research published in GIA's peer reviewed journal Gems & Gemology found that a round brilliant can be described with six proportion parameters, while a marquise needs 19 and some pear shapes reach 57. The researchers' conclusion was blunt: any predictive cut grading for fancy shapes has to be built on a three dimensional model of the actual stone, not a proportion chart. Until that exists at scale, your eyes are the grading system.

Settings That Protect the Points

The two points of a marquise are its only real structural weakness, and the setting decides whether that ever becomes your problem. GIA's guidance on this is specific, and it is worth following rather than improvising.

• V-prongs. Metal wraps around each tip and shields it from a direct knock. The default choice, and close to essential above one carat.
• Six-prong settings. Two V-prongs at the tips plus four along the sides spread pressure more evenly across the stone.
• Partial or full bezels. The most protection available, and the least likely to snag. GIA singles these out for hands-on lifestyles.
• A slightly thicker girdle at the points. In GIA's words, acceptable and often beneficial. Do not read it on a report as a flaw.
• French tips. The large bezel facet at each point is replaced with smaller star and upper girdle facets, reinforcing the thinnest part of the stone.

Channel and bezel work solves the problem differently, by surrounding the stone with gold on every side. The Prism Emerald Eternity Band (from $1,050) uses bezel-set step cuts to the same end, and our guide to diamond ring settings compares the full range if you are still deciding.

What a Lab-Grown Marquise Costs in 2026

At Roomy's, a marquise set in solid gold starts at $450 and runs to about $1,950 for a full eternity band carrying more than two carats. That band is wide because the shape is used in very different ways, not because quality varies: every stone is lab-grown, IGI certified, and hand-set in solid 10, 14 or 18kt gold.

The Celeste Marquise Diamond Drop Earrings (from $450) is the gentlest entry point, two marquise stones falling from the lobe. The Aqua Arc Diamond Marquise Ring (from $550) sets marquise diamonds against aquamarine in a chevron sweep. The Marquise Diamond Cluster Pendant (from $1,200) gathers them into a single bloom on the chain. At the top of the range, the Marquise Eternity Diamond Band (from $1,900) runs more than two carats of marquise stones east-west around the finger, and the Windmill Marquise Eternity Band (from $1,950) arranges them into pinwheels that catch light from every angle. The Celeste pair turns up again in our 2026 diamond drop earring edit, which looks at how length changes the way an earring reads.

For context on the wider market: The Knot Worldwide's 2026 Real Weddings Study reports that 61 percent of engagement rings now carry a lab-grown center stone, a 239 percent rise since 2020, with an average spend of $4,600 and an average lab-grown center of 1.9 carats. Lab-grown is no longer the budget alternative. It is the default, and it is what makes a two carat marquise a reasonable thing to own.

Frequently Asked Questions