Diamond Shapes and Cuts: All Nine Shapes Compared, With Sizes, Sparkle, Prices and Who Each Suits

A diamond's shape is its outline seen from above, round, oval, emerald, cushion, radiant, pear, marquise, Dutch marquise or moval, and it is a different thing from its cut grade, which measures how well the stone was fashioned. The round brilliant is the most popular shape and the one that sparkles most, on 26 percent of the engagement rings bought in 2025 by The Knot's count, with the oval one point behind; the marquise and the pear look the largest for their weight, a 1 carat marquise running 10.4 mm long against 6.4 mm for a 1 carat round; the emerald cut sparkles least and shows most; and in lab-grown the shapes cost within a few hundred dollars of each other, the least expensive 2 carat stone of each shape in Clairamor's picker on October 19, 2026 running from $1,091 for a radiant and $1,100 for an emerald cut to $1,138 for a round, $1,358 for an oval, $1,395 for a pear, $1,508 for a marquise and $1,680 for a moval. This page compares all nine shapes we set on the things that decide the choice: what each one looks like and why, how big it looks per carat, how much it sparkles, what it shows and what it hides, how it wears, which settings suit it, who each suits, and what each cost on the day. Every shape has its own longer guide, linked from its section, and every size and price here is a real stone from our picker on the date given, so treat the numbers as a snapshot and the picker as the live version. For one weight across every shape, the 1 carat, 2 carat, 4 carat and 5 carat diamond ring guides show each shape on the hand and in price.

Round brilliant lab-grown diamond solitaire engagement ring in 14k white gold Oval lab-grown diamond solitaire engagement ring in 14k white gold Emerald cut lab-grown diamond solitaire engagement ring in 14k white gold Elongated cushion cut lab-grown diamond solitaire engagement ring in 14k white gold Radiant cut lab-grown diamond solitaire engagement ring in 14k white gold Pear shaped lab-grown diamond solitaire engagement ring in 14k white gold Marquise lab-grown diamond solitaire engagement ring in 14k white gold Dutch marquise lab-grown diamond solitaire engagement ring in 14k white gold Moval lab-grown diamond tulip style hidden halo engagement ring in 14k yellow gold
The nine shapes Clairamor sets, left to right and top to bottom: round, oval, emerald cut, elongated cushion, radiant, pear, marquise, Dutch marquise and moval. The first eight are our $950 solitaire in 14k white gold; the moval is the tulip style hidden halo in 14k yellow gold.

Diamond shapes at a glance

Shape What it is 2 carats measures about Sparkle and wear 2 carat from (Oct 19, 2026)
Round The round brilliant, 57 or 58 facets, the only shape with a laboratory cut grade 8.1 mm across The most sparkle of any shape; no points; hides inclusions and color best $1,138
Oval A round brilliant stretched into an ellipse, ratio 1.35 to 1.50 10.1 x 7.0 mm Round-like sparkle with a bow-tie to check; no points; lengthens the finger $1,358
Emerald cut A step cut: a rectangle with clipped corners and facets in rows, ratio 1.30 to 1.50 8.4 x 6.0 mm Broad flashes rather than sparkle; shows clarity and color most; clipped corners are durable $1,100
Cushion A pillow with rounded corners; Clairamor sets elongated cushions, ratio 1.20 and up 9.1 x 6.7 mm Chunky or crushed-ice sparkle; no points; cut deep, so it looks a little smaller for its weight $1,204
Radiant The emerald cut's clipped-corner outline with brilliant facets, square or elongated 8.8 x 6.2 mm The sparkliest clipped-corner shape; no points to chip $1,091
Pear A teardrop, round at one end and pointed at the other, ratio 1.50 to 1.75 11.5 x 7.1 mm Round-like sparkle with a bow-tie; one point to protect with a prong $1,395
Marquise A boat: two curved sides meeting in a point at each end, ratio 1.75 to 2.15 13.0 x 6.6 mm The most length per carat of any shape; a bow-tie; two points to protect $1,508
Dutch marquise An elongated hexagon with straight sides, reported as a hexagonal modified brilliant 12.7 x 6.8 mm at 2.55 carats Marquise-like sparkle with a sharper, more modern edge; two points; rare, 41 stones of 1 carat and up $1,470 at 1.89 carats; $2,071 at 2.55
Moval An elongated oval with softly pointed marquise ends, ratio 1.7 to 2.0 10.7 x 6.2 mm Between the oval and the marquise in every way; rare, 355 stones of 1 carat and up $1,680

The measurements are those of the least expensive stone of each shape at about 2 carats in our picker on October 19, 2026, D to G color, IF to VS2 clarity and Ideal to Very Good cut, so they are real diamonds rather than textbook proportions; expect other stones of the same weight to vary by half a millimeter or so. The prices are the least expensive stone at 2.00 to 2.09 carats, before the setting; our settings start at $950 in 14k gold whatever the shape.

Shape is not cut

The two words are swapped constantly, in shops as much as in search boxes, so it is worth separating them once. Shape is the outline of the stone seen from above: round, oval, pear and so on. Cut, in the sense a laboratory uses, is the grade for how well the stone was fashioned, judged on a round brilliant from its proportions, polish and symmetry and printed on the report as Ideal, Excellent, Very Good, Good, Fair or Poor. The confusion comes from the trade's habit of calling shapes "cuts" too: an emerald cut, a cushion cut and a radiant cut are shapes, named for the faceting style that gives them their look. Every shape on this page is a brilliant cut, with triangular and kite-shaped facets arranged to throw light back, except the emerald cut, which is a step cut, with long straight facets laid in parallel rows. That one difference explains more about how the shapes behave than anything else: brilliant cuts sparkle and hide what is inside them, a step cut flashes in broad planes and shows what is inside it. Our diamond cut grade guide covers the grade itself; only the round carries one, so on every other shape the length-to-width ratio, the depth and the video do the grade's job.

Round brilliant

The round brilliant is the shape every other shape is measured against: 57 facets, 58 with a culet, arranged to return more light than any other outline, in proportions that GIA standardized and has graded since 2006. It is the most popular engagement ring stone by a wide and durable margin, on 26 percent of the rings bought in 2025 by The Knot's 2026 count, and the easiest to buy, because its cut grade does the first pass for you and because its size converts reliably from carats, about 6.4 mm across at 1 carat, 8.1 mm at 2 and 9.3 mm at 3. It has no points to chip, hides inclusions and tint better than any shape, and sits in every setting ever made. Its one disadvantage is the flip side of its symmetry: it shows the least face for its weight of any brilliant shape except the cushion, so a 1 carat round covers less finger than a 1 carat oval, pear or marquise. Our round brilliant guide covers the cut grade, the sizes, the settings and the prices; the picker held 9,528 rounds of 1 carat and up on October 19, 2026, from $640 at 1 carat and $1,138 at 2, and our round engagement rings start at $950 in 14k gold before the stone.

Oval

An oval is a round brilliant's facets stretched into an ellipse, and it has become the round's only real rival, one point behind it in The Knot's 2026 study. The reasons are practical. It shows more face than a round of the same weight, 7 to 12 percent more in our picker, its length runs up the finger and makes the hand look longer, it has no points to chip, and it sparkles nearly like a round. Three things decide whether an oval is a good one: the length-to-width ratio, 1.35 to 1.50 for nearly every stone we sell, with lower ratios reading plump and higher ones reading slim; the bow-tie, the dark band across the middle that every oval carries to some degree and that only the video shows; and the setting, which on an oval means where the four prongs sit, at the ends or on the shoulders. Our oval engagement ring guide covers the ratio, the bow-tie and the settings. The picker held 9,432 ovals of 1 carat and up on October 19, 2026, from $741 at 1 carat and $1,358 at 2, which put the oval among the dearer shapes that day; oval engagement rings start at $950 before the stone.

Emerald cut

The emerald cut is the step cut: a rectangle with clipped corners and long, straight facets in parallel rows, which flash in broad planes as the hand moves rather than sparkling, the effect the trade calls the hall of mirrors. It is the calmest and most architectural of the shapes, the one that reads as a window rather than a firework, and it is also the one that shows what it holds, because those open facets hide nothing: an inclusion a brilliant cut would scatter sits in plain view in a step cut, and a hint of warmth shows too. In lab-grown that costs almost nothing to fix, since a VS1 or VVS2 adds tens of dollars, which is one reason the emerald cut has grown so quickly. The ratio runs 1.30 to 1.50 for nearly nine of every ten we sell; the clipped corners make it one of the most durable outlines; and it takes a bezel more naturally than any other shape, the bezel emerald cut being the ring people find us for most. Our emerald cut guide covers clarity by the video, the ratio and the settings, and the radiant vs emerald cut comparison settles the choice between the two clipped-corner rectangles. The picker held 6,080 emerald cuts of 1 carat and up on October 19, 2026, from $654 at 1 carat and $1,100 at 2, the second-cheapest shape that day; emerald cut engagement rings start at $950 before the stone.

Cushion

A cushion is a pillow: a brilliant-cut stone with rounded corners and gently curved sides, descended from the old mine cut that was the diamond of the 1700s and 1800s, and the shape that came back into every conversation when Travis Kelce proposed to Taylor Swift with one. Two choices decide how a cushion looks, and most guides skip both. The outline is square, at a ratio up to about 1.10, or elongated, from about 1.15 up; Clairamor sets elongated cushions only, and our picker lists cushions at a ratio of 1.20 and up. The facets are chunky, the antique pattern of big clear flashes, or crushed ice, the modern shimmer of hundreds of small ones, and only the video tells you which. A cushion is the most forgiving fancy shape to wear, with no points at all, and the one that most reliably looks a little smaller than a round of the same weight, because it is cut deep. Our cushion cut guide measures square and elongated cushions against the round at every weight, and the elongated cushion guide goes deeper on the ratio and the sparkle. The picker held 2,957 elongated cushions of 1 carat and up on October 19, 2026, from $703 at 1 carat and $1,204 at 2; elongated cushion engagement rings start at $950 before the stone.

Radiant

A radiant is the emerald cut's outline, a rectangle or square with its four corners clipped, cut with brilliant facets so that it sparkles like a round. Henry Grossbard created it in 1977 to give the step cut's shape the light of a brilliant, and the result is the sparkliest of the clipped-corner shapes and one of the most durable, with no points anywhere. The proportion in lab-grown has become a choice between a square, 1.00 to 1.10, and an elongated stone, 1.35 to 1.55, since the classic 1.20 to 1.30 rectangle of the mined era has all but vanished from supply; the pattern of the sparkle, crushed ice or chunky, again shows only on the video; and the setting means four prongs at the corners or a bezel around the whole outline. Our radiant cut guide covers the ratios, the sparkle and the settings. The picker held 8,018 radiants of 1 carat and up on October 19, 2026, from $665 at 1 carat and $1,091 at 2, the least expensive shape at 2 carats that day; radiant cut engagement rings start at $950 before the stone.

Pear

A pear is a teardrop: a brilliant-cut stone that is round at one end and comes to a point at the other, so it sparkles like a round, runs up the finger like a marquise and shows more length per carat than an oval. Three things decide whether a pear is a good one. The ratio, which GIA's experts put between 1.50 and 1.75 and where nearly every pear in our picker sits. The bow-tie, which every pear carries to some degree and which you judge from the video, not the report. And the point, the one part of the stone that can chip, which is why every prong head we make for a pear caps it with a prong of its own, and why the bezel pear is the pear ring people find us for most. Worn point-up or point-down is a matter of taste; point toward the fingertip is the convention. Our pear shaped engagement ring guide covers the ratio, the point, the bow-tie and the settings. The picker held 8,118 pears of 1 carat and up on October 19, 2026, from $571 at 1 carat, the cheapest shape at that weight, and $1,395 at 2; pear shaped engagement rings start at $950 before the stone.

Marquise

A marquise is a brilliant cut shaped like a boat: two curved sides that meet in a point at each end, about twice as long as it is wide, with a classic ratio of 1.75 to 2.15. It gives the most length for the weight of any shape, so it looks larger than anything else of the same carat and makes the finger look longer; on October 19, 2026 a 1 carat marquise in our picker measured 10.4 by 5.1 mm and a 2 carat 13.0 by 6.6 mm, against 6.4 and 8.1 mm across for rounds of the same weight. The two things to check are the bow-tie, which the marquise carries more than any other shape, and the two points, which want a prong over each tip. It is the most vintage-reading of the elongated shapes. Our marquise diamond guide covers the ratio, the bow-tie, the points and the settings. The picker held 6,348 marquises of 1 carat and up on October 19, 2026, from $728 at 1 carat and $1,508 at 2; marquise engagement rings start at $950 before the stone.

Dutch marquise

A Dutch marquise is an elongated hexagon: two long straight sides that run parallel, and from each end of those a shorter straight edge that angles in to meet at a point, cut in the brilliant style so that it sparkles like a marquise. It is not a marquise with different proportions. A marquise has two smoothly curved sides that sweep from point to point; a Dutch marquise has six straight edges meeting at six corners, so the outline reads as geometry rather than as a boat, with a sharper, more modern edge. The name is a trade name rather than a shape any laboratory defines, and a grading report describes the stone as a hexagonal modified brilliant. On the hand it does what every elongated shape does, covering more finger for the carat than a round and lengthening the line of the hand. Our Dutch marquise guide explains the shape, its ratio and the 17 settings we cut for it. It is the rarest shape in the picker: 41 stones of 1 carat and up on October 19, 2026, from $907 at 1.13 carats and $1,470 at 1.89, which is why it is the one shape where the stone, not the setting, is worth choosing first; Dutch marquise engagement rings start at $950 before the stone.

Moval

A moval is an elongated oval finished with the softly pointed ends of a marquise. The name is a blend of the two, and the shape sits between them in every respect: most movals are 1.7 to 2.0 times longer than they are wide, against 1.35 to 1.50 for an oval and about 2.0 for a marquise, so it has more length than an oval and softer ends than a marquise, and its two points are blunter than a marquise's and less exposed. It is a rare shape, grown and cut in small numbers, which shows in both the count and the price. Our moval engagement ring guide covers how it reads from the side, which settings suit it and how it compares with the two shapes it is named for; the elongated engagement rings guide compares all seven long shapes side by side. The picker held 355 movals of 1 carat and up on October 19, 2026, from $810 at 1 carat and $1,680 at 2, the dearest of the eight common shapes at both weights; moval engagement rings start at $950 before the stone.

Which diamond shape looks the biggest?

The long shapes, in this order: marquise, then pear, then oval and moval, then the clipped-corner rectangles, with the round in the middle and the deep shapes, the emerald cut and the cushion, at the back. Two things drive the ranking. Face-up area, which is how much of the finger the stone actually covers, favors shapes that spread their weight wide and shallow; and length, which is what the eye reads first, favors anything that runs up the finger. A marquise wins on both, a pear and an oval win on length, and an emerald cut or a cushion loses on both because so much of its weight sits in the pavilion where it cannot be seen. The table gives the measurements of the least expensive stone of each shape at 1 and 2 carats in our picker on October 19, 2026.

Shape 1 carat, length x width 2 carats, length x width Looks, carat for carat
Marquise 10.4 x 5.1 mm 13.0 x 6.6 mm Largest; the longest line on the finger
Pear 8.9 x 5.7 mm 11.5 x 7.1 mm Large; long with a wide body
Oval 8.5 x 5.9 mm 10.1 x 7.0 mm Large; 7 to 12 percent more face than a round
Moval 7.6 x 5.3 mm 10.7 x 6.2 mm Large at 2 carats; long and slim
Radiant 7.2 x 5.1 mm 8.8 x 6.2 mm About a round, elongated
Round 6.4 mm across 8.1 mm across The reference
Cushion (elongated) 7.1 x 5.4 mm 9.1 x 6.7 mm A little smaller than a round; cut deep
Emerald cut 6.8 x 4.7 mm 8.4 x 6.0 mm Smallest for the weight; much of it below the girdle
Dutch marquise 10.6 x 5.0 mm at 1.13 carats 12.0 x 6.0 mm at 1.89 carats As long as a marquise

Two cautions. The lengths above are the cheapest stone of each weight, and the cheapest stone is often the deepest, so a well-proportioned stone of the same weight can run a few tenths of a millimeter longer; the picker lists every stone's measurements, and buying by the millimeter rather than the carat is the single best habit a shape-shopper can have. And length is not everything: a 2 carat oval at 10.1 by 7.0 mm has more face than a 2 carat marquise at 13.0 by 6.6, even though the marquise reads longer. Our which diamond shape looks the biggest page ranks the shapes by face-up area, the size comparison simulator draws any shape at any weight on a hand, and the carat size chart gives every weight in millimeters. Set across the finger instead of along it, an oval or marquise covers more of its width still; our east-west engagement rings turn six of the nine shapes sideways.

Which shape sparkles the most, and which shows the most?

The round brilliant sparkles most, because its facets were arranged for exactly that and because its symmetry lets a cutter hit the ideal proportions every time; the laboratories grade it for cut for the same reason. The other brilliant shapes follow close behind in a loose order, oval, pear, marquise and moval with their bow-ties, radiant with its clipped-corner brilliance, cushion in either its chunky or its crushed-ice version, and the differences among them owe more to the individual stone than to the shape. The emerald cut sits alone at the other end: a step cut does not sparkle so much as flash, in broad sheets of light and dark as the hand turns, which is the whole appeal for the people who choose it and the whole objection for the people who do not. The same faceting decides what a shape shows. A brilliant cut scatters light across hundreds of small facets and hides a VS2 inclusion and a G color completely; a step cut's long open facets are windows, so an emerald cut asks for a VS1 clarity and is the shape where a D to F color is worth having, which in lab-grown costs tens of dollars rather than thousands. Our clarity chart and color scale guide go grade by grade and shape by shape.

Which shape wears best?

Durability on a diamond is a question of points, not of hardness, since every diamond is equally hard. A round, an oval and a cushion have no corners at all and will take decades of ordinary wear without a thought; an emerald cut and a radiant have their corners clipped, which is exactly why those corners were clipped; a pear has one point and a marquise and a Dutch marquise have two, and each point wants a prong over it, which is why our pear heads cap the point and our marquise and Dutch marquise heads cap both. A bezel, which wraps the whole outline in metal, removes the question for any shape and is the setting people find us for most on the emerald cut and the pear. Whatever the shape, take the ring off for the gym, the garden and any work with tools or ropes, and have the prongs checked when it is cleaned. Our settings guide covers every setting we make and which shapes each one suits.

Which shape is the cheapest, and which is the most expensive?

In mined diamonds the round carries a premium of a third or more over the fancy shapes, because cutting a round wastes the most rough and because demand is deepest. In lab-grown the premium has shrunk to a few hundred dollars and the order changes with the day's supply. The table gives the least expensive stone of each shape at four weights in our picker on October 19, 2026, D to G color, IF to VS2 clarity and Ideal to Very Good cut, before the setting.

Shape 1 carat 1.5 carats 2 carats 3 carats
Pear $571 $942 $1,395 $1,575
Round $640 $938 $1,138 $1,865
Emerald cut $654 $751 $1,100 $1,604
Radiant $665 $793 $1,091 $1,799
Cushion (elongated) $703 $946 $1,204 $1,888
Marquise $728 $1,060 $1,508 $1,806
Oval $741 $934 $1,358 $2,008
Moval $810 $1,296 $1,680 $2,317
Dutch marquise $907 (1.13 ct) $1,470 (1.89 ct) $2,071 (2.55 ct) $2,359 (3.22 ct)

Read down the columns and the cheap shapes are the ones the growers cut most, which on the day were the pear, the round, the emerald cut and the radiant, and the dear shapes are the rare ones, the moval and the Dutch marquise, where a few hundred stones of 1 carat and up stand against thousands. Read across and weight still dominates: the whole spread between the cheapest and dearest common shape at 2 carats was $589, about what the step from 2 carats to 3 costs in a round. For comparison, StoneAlgo's index of natural diamonds put a 2 carat round at $19,971, an oval at $19,318, a pear at $19,268, an emerald cut at $15,016 and a cushion at $13,759 the same week, so in mined stones the shape premium is thousands of dollars and in lab-grown it is a setting's worth. Our lab-grown diamond price guide prices every weight, shape and grade from the same picker, and the price calculator adds any stone to any setting on the day.

Which shape is the most popular?

The round, then the oval, and the gap between them is closing. The Knot's 2026 study put a round brilliant on 26 percent of the engagement rings bought in 2025 and an oval one point behind, with the two of them together on about half of all rings; GIA's reporting of The Knot's 2023 study had the oval at 23 percent, so it has gained while the round has held. Our own picker tells the same story from the supply side: rounds and ovals were the two biggest shapes on October 19, 2026, at 9,528 and 9,432 stones of 1 carat and up, with the pear and the radiant next at about 8,000 each, the marquise and the emerald cut at about 6,000, the elongated cushion at nearly 3,000 and the moval and Dutch marquise in the hundreds and tens. The shapes we do not set, the princess, the asscher, the heart and the trillion, have either fallen out of fashion or never had the demand in lab-grown to stock; the princess in particular, the square brilliant that was the second most popular shape of the 2000s, has given most of its ground to the elongated cushion and the radiant.

How to choose a diamond shape

Start with the look, because it is the only decision nobody can make for you, and then let four practical questions narrow it. First, sparkle or glow: if you want the stone to flash from across a room, choose a brilliant shape; if you want it to read as calm, clear and architectural, choose the emerald cut, and accept that it will ask for a cleaner, whiter stone. Second, size for the money: if the point of the ring is the biggest look the budget allows, the marquise, the pear and the oval cover the most finger per carat, and the elongated shapes all make the hand look longer, which suits a short or a wide finger especially well; a round or a cushion suits a hand that is already long, or a buyer who prefers a stone that reads as classic rather than long. Third, wear: a round, an oval or a cushion has nothing to chip, a pear or a marquise wants its points capped, and a bezel settles the question on any shape. Fourth, the setting: every shape we cut comes in every setting we make, but some pairs are natural, the bezel on the emerald cut and the pear, the tulip prongs on anything with a point, the hidden halo on the oval and the elongated cushion, the three stone on the elongated shapes, and the settings guide covers each pairing.

Once the shape is chosen, choose the stone by three numbers and a video rather than by the grade. The length-to-width ratio sets the character of every fancy shape, 1.35 to 1.50 on an oval, 1.30 to 1.50 on an emerald cut, 1.20 and up on our cushions, 1.00 to 1.10 or 1.35 to 1.55 on a radiant, 1.50 to 1.75 on a pear, 1.75 to 2.15 on a marquise and 1.7 to 2.0 on a moval, and the picker lists every stone's length and width so you can work it out. The measurements, not the carats, tell you how big the stone will look. And the video shows the three things no report does: the bow-tie on an oval, pear, marquise or moval, the windowing of an emerald cut, and the chunky-or-crushed-ice pattern of a cushion or radiant. Color and clarity come last, and in lab-grown they cost little: D to G and VS2 or better for every brilliant shape, VS1 and a D to F for an emerald cut, with the saving spent on the weight. Our guide to the 4Cs puts the grading scales and their prices on one page, and the shop by shape page takes you straight to the rings in each shape.

Where Clairamor fits

Clairamor sets nine shapes and no others: round, oval, emerald cut, elongated cushion, radiant, pear, marquise, Dutch marquise and moval. Every stone in our picker is lab-grown, D to G in color, IF to VS2 in clarity and Ideal to Very Good in cut, listed with its length and width, its IGI, GIA or HRD report and a 360 video, and sorted by any weight band and price; on October 19, 2026 it held 50,836 stones of 1 carat and up across the first eight shapes and 41 Dutch marquises. Every setting is made in every shape it suits and priced without the center stone, from $950 for the 14k solitaire, so the ring's price is the setting you choose plus the stone you choose, and the price calculator adds them up on the day. We do not set princess, asscher, heart or trillion cuts, and we set elongated cushions rather than square ones. Take the finished ring off for the gym, the garden and any work with tools or ropes, and have the prongs checked when it is cleaned.

Torn between an oval and a pear, or between a round and an elongated cushion? Book a design consultation.

Frequently asked questions

What are the different diamond shapes called?

The shapes in common use are the round brilliant, oval, emerald cut, cushion, radiant, pear, marquise, princess, asscher and heart, plus newer trade names such as the moval, an oval with marquise ends, and the Dutch marquise, an elongated hexagon. Clairamor sets nine of them: round, oval, emerald cut, elongated cushion, radiant, pear, marquise, Dutch marquise and moval.

What is the difference between a diamond shape and a diamond cut?

Shape is the outline seen from above: round, oval, pear. Cut is the laboratory grade for how well a round brilliant was fashioned, from Ideal or Excellent down to Poor, based on its proportions, polish and symmetry. The trade also calls shapes cuts, as in emerald cut or cushion cut, which is why the words get mixed; only the round carries a cut grade on a report.

Which diamond shape is the most popular?

The round brilliant, on 26 percent of the engagement rings bought in 2025 according to The Knot's 2026 study, with the oval one point behind and gaining; together they are about half of all rings. In Clairamor's picker on October 19, 2026 rounds and ovals were also the two largest shapes in stock, at 9,528 and 9,432 stones of 1 carat and up.

Which diamond shape looks the biggest?

The marquise, then the pear and the oval, because they spread their weight long and shallow: on October 19, 2026 a 2 carat marquise in Clairamor's picker measured 13.0 by 6.6 mm and a 2 carat oval 10.1 by 7.0 mm, against 8.1 mm across for a 2 carat round. The emerald cut and the cushion look smallest for their weight, because so much of it sits below the girdle.

Which diamond shape sparkles the most?

The round brilliant, whose 57 or 58 facets were arranged for exactly that and whose proportions the laboratories grade. The other brilliant shapes, oval, pear, marquise, moval, radiant and cushion, follow close behind, with the differences owing more to the individual stone than to the shape. The emerald cut, a step cut, flashes in broad planes rather than sparkling.

Which diamond shape is the cheapest?

In lab-grown it changes with the day's supply and the differences are small. On October 19, 2026 the least expensive 2 carat stone in Clairamor's picker was a radiant at $1,091, then an emerald cut at $1,100 and a round at $1,138, while the pear was cheapest at 1 carat at $571; the rare moval and Dutch marquise cost most. In mined diamonds the round carries the premium.

Which diamond shape is the most expensive?

In mined diamonds, the round, because cutting one wastes the most rough and demand is deepest. In lab-grown the dearest shapes are the rare ones: on October 19, 2026 a 2 carat moval in Clairamor's picker started at $1,680 and a Dutch marquise at $1,470 for 1.89 carats, against $1,138 for a round, because a few hundred stones of those shapes stand against thousands of rounds.

Which diamond shape is best for an engagement ring?

The one whose look you prefer, narrowed by four questions: sparkle or glow, size for the money, wear, and the setting. A round or an oval suits almost anyone; a marquise, pear or oval gives the biggest look per carat and lengthens the hand; an emerald cut gives calm elegance and asks for a cleaner stone; a cushion or radiant gives sparkle with rounded or clipped corners that never chip.

What is the most durable diamond shape?

Every diamond is equally hard, so durability is a question of points. A round, an oval and a cushion have no corners to chip; an emerald cut and a radiant have theirs clipped for that reason; a pear has one point and a marquise or Dutch marquise two, each of which wants a prong over it. A bezel setting, which wraps the outline in metal, protects any shape completely.

Which diamond shape hides inclusions and color best?

The round brilliant, followed by the other brilliant shapes, because their many small facets scatter light and hide a VS2 inclusion or a G color completely. The emerald cut hides the least: its long open facets act as windows, so it asks for a VS1 clarity and a D to F color, which in lab-grown adds tens of dollars rather than thousands.

What is the length-to-width ratio and why does it matter?

The stone's length divided by its width, the number that sets the character of every fancy shape: 1.35 to 1.50 on an oval, 1.30 to 1.50 on an emerald cut, 1.20 and up on Clairamor's cushions, 1.50 to 1.75 on a pear, 1.75 to 2.15 on a marquise and 1.7 to 2.0 on a moval. A lower ratio reads plump, a higher one slim; the picker lists every stone's measurements.

What is a bow-tie in a diamond?

The dark band that crosses the middle of an oval, pear, marquise or moval, caused by the facets at the center of a long stone failing to return light to the eye. Every long brilliant has one to some degree; a faint one disappears in sparkle and a heavy one reads as a shadow at every angle. It is not on the report, so judge it from the listing's video.

Related reading

About the author

Cameron Malakan is the owner of Clairamor and a third-generation jeweler. He writes Clairamor's Diamond Education guides. Read Clairamor's story.