Choosing the diamond shape for an engagement ring is one of the most important decisions in your project. Round, oval, pear, marquise, cushion, emerald... each shape has its own personality and sparkle, and suits a different style of woman. At Laveran Paris, a jewelry house specializing in ethical lab-grown diamonds, we guide every couple through this decisive choice. This complete guide gives you everything you need to make the right decision — and fall in love twice.
Our detailed guides by shape: round · oval · pear · marquise · cushion · princess · emerald cut.
1. Why does the diamond shape matter so much?
A diamond's shape — also called its "cut" — determines its visual appearance, the way it catches the light and how it looks on the hand. Two diamonds of the same carat weight can look very different depending on their shape: an oval diamond, for example, looks larger than a round diamond of the same carat weight because it visually elongates the finger.
Shape also affects price. At equal carat weight, the most sought-after shapes — like the round brilliant — are generally more expensive, while so-called "fancy" shapes (oval, pear, marquise) often offer better size-for-price value on the market. At Laveran, however, our solitaires are priced the same whatever the shape.
Finally, the shape determines the type of setting and the ideal mount. It is closely tied to the bride-to-be's style. Before diving into the details, browse our collection of lab-grown diamond engagement rings to see the shapes available.
2. The round brilliant diamond: the ultimate safe bet
Characteristics
The round brilliant diamond is the most chosen shape in the world: on its own it accounts for about 60% of engagement ring sales. Its 57- or 58-facet cut is designed to maximize light reflection, giving it unrivaled sparkle and brilliance.
Who is it for?
- Women who love timeless classics
- Those who want a diamond that will sparkle as much as possible
- People who value resale value (the round is the most liquid)
Good to know
On the market, it is generally the most expensive shape at identical carat weight; at Laveran, our solitaires are priced the same whatever the shape. It is also the easiest to pair with any setting: a clean solitaire, halo, pavé or side-stone ring.
At Laveran Paris, our round lab-grown diamond solitaires are available from 0.30 to 3.00 carats in 18k white, rose and yellow gold and platinum.
→ Everything about this shape (sizes in mm, carat-by-carat prices, settings): our round diamond ring guide.
3. The oval diamond: the star trend of 2026
Characteristics
The oval diamond has grown increasingly popular in recent years, driven in particular by celebrities and influencers. Its elongated shape visually lengthens the finger, giving the impression of a larger stone. It offers sparkle close to that of the round brilliant, with a more original and romantic character.
Who is it for?
- Women with short fingers who want to elongate them visually
- Those looking for originality without giving up brilliance
- Romantic, feminine personalities
Good to know
Watch out for the "bow-tie" effect: a dark area visible in the center of some poorly cut ovals. At Laveran, our experts select only oval diamonds with optimal proportions to avoid this flaw.
→ Everything about this shape (sizes in mm, carat-by-carat prices, settings): our oval diamond ring guide.
4. The pear diamond: elegance and daring
Characteristics
The pear diamond, also called a "teardrop," combines the brilliance of the round with the elongated character of the marquise. Its point should face the fingertips to lengthen the hand even more. It is often associated with bold, confident personalities.
Who is it for?
- Women who like to stand out
- Lovers of haute couture jewelry
- Those who want a unique, recognizable shape
Good to know
The tip of a pear diamond is a weak point: choose a prong setting with an extra prong at the tip to protect it. A pear diamond can be worn point up or point down, depending on your preference — both are elegant.
→ Everything about this shape (sizes in mm, carat-by-carat prices, settings): our pear diamond ring guide.
5. The marquise diamond: the most elongating shape
Characteristics
The marquise diamond is a boat-shaped cut with two pointed ends. It is the shape that gives the greatest impression of size relative to its actual weight: a 0.70-carat marquise can look as large as a 0.90-carat round. Historically associated with French nobility, it is making a strong comeback in 2026 trends.
Who is it for?
- Women with long, slender fingers
- Those who want to maximize apparent size on a controlled budget
- Romantic personalities with a love of history
Good to know
As with the pear, the two points of the marquise are vulnerable areas. A setting with protective prongs at the tips is essential. Maison Laveran offers the marquise as the Montaigne solitaire, the Vendôme pavé and the Odéon halo.
→ Everything about this shape (sizes in mm, carat-by-carat prices, settings): our marquise diamond ring guide.
6. The cushion diamond: warmth and vintage charm
Characteristics
The cushion diamond — or "cushion cut" — is a square shape with rounded corners reminiscent of the antique cuts of the 19th century. It is less brilliant than the round but offers a softer, more colorful light, often described as "romantic." It is perfect for halo settings that maximize its effect.
Who is it for?
- Women with a vintage or Art Deco style
- Those who prefer a warmer, less intense sparkle
- People who appreciate history and jewelry tradition
Good to know
The cushion is often offered in two variants: classic cushion (more scintillation) and modified cushion (closer to the round brilliant). Let us know your preferences during your consultation.
→ Everything about this shape (sizes in mm, carat-by-carat prices, settings): our cushion diamond ring guide.
7. The emerald cut diamond: the connoisseur's choice
Characteristics
The emerald cut diamond is a rectangular step cut with trimmed corners. Unlike other cuts, it doesn't aim to maximize sparkle but to reveal the diamond's transparency and purity. It is the connoisseur's cut, requiring a stone of high clarity (VS1 or better) to reach its full potential.
Who is it for?
- Women with a minimalist, modern style
- Those who appreciate architecture and straight lines
- Sophisticated personalities who prefer understated elegance to flamboyant sparkle
Good to know
The emerald cut is unforgiving of impurities: it acts like a window into the stone. At Laveran, we offer this shape only with diamonds certified VS2 or better to guarantee perfect transparency.
→ Everything about this shape (sizes in mm, carat-by-carat prices, settings): our emerald cut diamond ring guide.
8. How to choose based on hand shape
The diamond's shape should harmonize with the hand of the woman who will wear it. Here are our recommendations:
Short, wide fingers:
- Favor elongated shapes: oval, pear, marquise. They create an illusion of length.
- Avoid square cushion and emerald cuts, which emphasize width.
Long, slender fingers:
- Every shape suits you! Round, cushion and emerald are particularly flattering.
- You can wear wider shapes without worrying that your hand will look heavy.
Small hands:
- Choose diamonds between 0.50 and 1.00 carat: a stone that is too large looks out of proportion.
- The pear and the oval are your best allies for visually enlarging the hand.
To help you picture the result, book an appointment with our experts in one of our 10 showrooms in France. We provide sample rings so you can try every shape on your hand.
9. Diamond shape and budget: what you need to know
Budget is often the deciding factor in choosing a shape. Here is an indicative price ranking at equal carat weight and quality:
From most expensive to most affordable:
- 1. Round brilliant (the most expensive — highest demand)
- 2. Cushion and princess
- 3. Emerald and Asscher
- 4. Oval and pear
- 5. Marquise (best apparent size for the price)
By choosing an IGI-certified lab-grown diamond at Laveran Paris, you already save 40 to 60% compared with a natural diamond of the same quality, whatever the shape. This gives you access to a higher carat weight for the same budget.
This ranking applies to the market in general. At Laveran, our Montaigne solitaires are priced the same whatever the shape, at equal carat weight and quality: from €880, and €1,744 for 1 carat. So the choice comes down purely to taste.
Discover our complete collection of lab-grown diamond engagement rings, available from 0.30 to 3.00 carats.
10. Diamond shape and colored diamonds: a trending combination
In 2026, a strong trend is taking hold: pairing an original shape (pear, oval, marquise) with a colored lab-grown diamond — pink, blue or yellow. Laveran Paris offers the widest range of colored diamonds on the French market, at direct prices with no middlemen.
A pear-cut pink diamond, a cushion-cut blue diamond or an oval-cut yellow diamond: these combinations create truly one-of-a-kind engagement rings that reflect a strong personality.
FAQ — Your questions about diamond shapes
Which diamond shape sparkles the most?
The round brilliant diamond is unquestionably the most brilliant shape: its 57 to 58 facets are mathematically designed to maximize the reflection and refraction of light. The oval comes second, with almost equivalent sparkle.
Which diamond shape looks the largest?
The marquise is the shape that looks largest at equal carat weight, followed by the oval and the pear. These three elongated shapes have a larger visible surface (table area) than the round, which makes them look more impressive.
Which shape is the most durable for an engagement ring?
The round brilliant and the cushion are the most durable shapes because they have no exposed points. Shapes with corners or points (marquise, pear, princess) require protective settings at the tips.
Can I choose the diamond shape through Laveran's custom workshop?
Absolutely! The Laveran Paris custom workshop lets you freely choose the diamond's shape, carat weight, quality, color and setting. Book a complimentary consultation with our jewelry experts.
Which diamond shape is most on trend in 2026?
The oval dominates 2026 trends, followed by the pear and the marquise, which are making a strong comeback. The round remains the number-one choice in volume, but "fancy" shapes are winning over more and more couples who want to stand out.
Does the diamond shape affect IGI or GIA certification?
No, the shape does not affect the certification grade. IGI and GIA certify the diamond's quality according to the 4Cs (carat, color, clarity, cut) whatever the shape. All Laveran diamonds are IGI- or GIA-certified.
Conclusion: which shape should you choose for your engagement ring?
There is no universal "best" shape — there is the shape that matches your future fiancée's style, hand shape and budget. In short:
- Round brilliant: for tradition and maximum brilliance
- Oval: for the 2026 trend and a lengthened finger
- Pear or marquise: for originality and the best size-for-price value
- Cushion: for vintage romance
- Emerald: for minimalist, sophisticated elegance
- Princess: for a square, modern and highly brilliant style
At Laveran Paris, you can book a complimentary appointment with our experts to try every shape on your hand, compare IGI-certified lab-grown diamonds, and leave with the perfect ring — with no middlemen and no surprises.
Read our related articles:
→Lab-Grown vs. Natural Diamonds: The Complete Comparison
→How to Choose Your Lab-Grown Diamond: 2026 Guide
→Lab-Grown Diamond Solitaire Rings: The Complete Guide
→IGI and GIA Certification for Lab-Grown Diamonds: Everything You Need to Know
