Most Popular Cuts for Lab-Grown Diamonds

Most Popular Shapes of Lab-Grown Diamond Engagement Ring

by Bianca de Leon

Lab-grown diamond engagement rings are changing the jewelry world. They are a wise choice, ethical, budget-friendly, and better for the globe. But there’s more to consider than just the 4Cs (cut, color, clarity, and carat); the shape of the diamond matters, too. It sets the tone for your ring’s entire look.

Some love the classic beauty of a Round diamond, while others prefer the bold style of a Marquise or Pear shape, picking the right one makes all the difference.

This guide highlights the best shapes for lab-grown diamonds. You’ll learn about Round, Oval, Emerald, Princess, Radiant, Cushion, Elongated Cushion, Pear, Marquise, Heart, Trillion, and Asscher. Ultimately, choosing the perfect shape for your dream ring will be easy.

Each diamond shape has its own charm. It shines differently, with unique symmetry and style. No matter the taste, there’s a perfect choice for everyone. 

1. Round Shape Engagement Ring - The Classic One

Round Cut Engagement Ring – The Classic One
Karaters

Best For: Those who want maximum brilliance and a classic, timeless design.

Common Settings: Solitaire, halo, pave, three-stone.

The round brilliant shape brings out the most sparkle. It has 58 tiny surfaces placed in a way that makes light bounce beautifully. The shape controls depth, table size, and angles to reflect light just right. This keeps brightness high and reduces any dull spots. Because of this, no other shape shines as much as round.

People love round-shape diamonds for their perfect symmetry. Their circular form helps light return evenly, making them glow from every angle. These shape rings have stayed popular for centuries. They give an incredible appearance in both simple modern bands and intricate vintage designs, classic, elegant, and always in demand., three-stone. Its perfect symmetry suits any setting, no other shape matches its light performance. The fire and brilliance stand out.

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2. Oval Shape Engagement Ring - Elegant and Lengthening

Oval Cut Engagement Ring – Elegant and Lengthening
Karaters

Best For: Those who want brilliance with an elongated, elegant look.

Common Settings: Solitaire, halo, east-west, three-stone.

Oval-shape lab diamond engagement rings have a modified brilliant cut. Their facets match round diamonds, but the shape is longer. This design enhances sparkle and makes fingers appear more slender. These engagement rings are good for those who admire the brilliance of a round cut yet prefer something unique with an extended form.

The oval cut reflects light well, producing impressive fire and brilliance. One big advantage is its larger face-up look. It takes up more surface area per carat than a round diamond, making it appear bigger without needing a higher budget.

This shape is well-known for making fingers look slimmer. Its long design guides the eye along the hand. Fingers appear longer and more elegant. A great choice for those with shorter or wider fingers who want a refined look.

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3. Emerald Shape Engagement Ring - True Icon of Luxury

Emerald Cut Engagement Ring - True Icon of Luxury
Karaters

Best For: Those who love vintage glamour and clean lines.

Common Settings: Solitaire, three-stone, baguette side stones, bezel.

Emerald-shape lab-grown diamond engagement rings shower their own charm, the sharp lines and Art Deco style give a classic appearance. The major focus is the clarity and depth of the rings rather than just the fluorescence. The long shape and step-cut facets create a mirror-like effect, adding a sense of luxury.

Brilliant-cut diamonds have tiny, scattered facets. The emerald cut stands apart. Its long, straight facets reflect light in sleek, gentle flashes rather than a bright, fiery sparkle. The large, open table enhances this effect, making the diamond look sleek and sophisticated. Because of this facet structure, inclusions are more visible. Clarity becomes an important factor. Choosing a higher clarity grade (VS1 or better) helps maintain the diamond’s luxurious appeal.

An emerald-cut engagement ring also makes fingers look slimmer. The rectangular shape gives the illusion of long, graceful hands. It also adds up the carat weight, which makes it appear larger than a round diamond of the same size.

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4. Princess Shape Engagement Ring - Modern and Chic

Princess Cut Engagement Ring – Modern and Chic
Karaters

Best For: Those who want a sharp, contemporary look with high brilliance.

Common Settings: Channel-set, solitaire, halo, cathedral.

Princess-shape lab-created diamond engagement rings glow with beauty. Their sharp, modern shape makes them a favorite choice. This princess cut engagement rings are the second most popular after round. People love its square design and bright sparkle.

Bold and sleek, it is a perfect engagement ring for those who prefer a trendy appearance. Round diamonds focus on symmetry, but the princess cut stands out differently. Its unique faceting style adds brilliance while keeping a crisp shape. 

A big reason people love the princess cut is that it keeps more of the original diamond. This makes it cost less per carat than a round diamond of the same size. The deeper pavilion also adds to its appeal. It creates an illusion of a bigger and heavier stone. A great choice for those who want a larger-looking diamond.

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5. Radiant Shape Engagement Ring - A Fusion of Fire and Shape

Radiant Cut Engagement Ring – A Fusion of Fire and Shape
Karaters

Best For: Those who love brilliance but prefer a geometric shape.

Common Settings: Halo, three-stone, solitaire, hidden halo.

Radiant-shaped diamond engagement rings have a deep pavilion, keeping more weight at the bottom. This makes them appear bigger per carat than round diamonds. A smart pick for anyone who wants a larger look without a higher price.                              

This cut comes in square and rectangular shapes; the square shape gives a balanced, structured look, while the rectangular one looks longer and adds grace, making the fingers appear slender.

The radiant cut has 70 precisely shaped facets. Light passes through to make them shine beautifully. The rings glow with intense flash, much like a round diamond. Perfect for those who want extra brilliance.

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6. Cushion Shape Engagement Ring - Soft and Romantic

Cushion Cut Engagement Ring – Soft and Romantic
Karaters

Best For: Those who love vintage-inspired elegance with a soft, romantic feel.

Common Settings: Halo, antique-style, double halo, bezel.

The lab-grown cushion-shaped diamond rings have a soft, pillow-like shape with rounded corners and large facets. It looks smooth and elegant. Light passes through it beautifully, making it sparkle. This cut mixes vintage charm with a modern touch, perfect for those who love a classic, romantic style.

People have loved this shape for over 200 years. It comes from old mine-cut diamonds of the 19th century. Better cutting methods have made it even brighter over time. That’s why it’s still a top choice

A cushion-cut diamond catches the eye with its fiery glow. Light passing through creates colorful reflections. It may not be as bright as a round-cut diamond, but it has a soft, warm sparkle. Many call it a romantic shimmer.

Some have a vintage charm. Others, with an elongated shape, feel modern. The larger surface makes fingers look longer and slimmer.

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7. Pear Shape Engagement Ring - Unique and Eye-Catching

Pear Cut Engagement Ring - Unique and Eye-Catching
Karaters

Best For: Those who want a bold, flattering shape with vintage appeal.

Common Settings: Halo, solitaire, east-west, asymmetrical.

The shape of a diamond, also known as the teardrop diamond, gives a dazzling appearance. It reflects light with the same intensity as a round diamond but has a longer layout, much like a marquise. This blend gives it a bold yet eternal charm. An excellent choice for those who love refined jewelry with a unique touch.

People who adore vintage or modern trends often go for pear-shaped diamonds. The elegant design grabs attention. Its long shape also makes fingers look slimmer and more graceful.

Pear-shape lab-grown diamond rings are celebrated for their asymmetry, which adds a touch of individuality and artistic appeal. The tapered point at one end enhances the stone’s visual length, while the rounded base softens its overall appearance, making it both bold and feminine.

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8. Marquise Shape Engagement Ring - Regal and Dramatic

Marquise Cut Engagement Ring - Regal and Dramatic

Best For: Those who want a bold, statement-making ring with vintage charm.

Common Settings: Solitaire, vintage-style, east-west, halo.

The marquise-shape diamond engagement ring has an old vintage appearance with a royal touch. The long, pointed shape stands out, proving to be a great choice for those who love bold and unique designs.

One big advantage is how large it looks. Even with the same carat size as other diamonds, it appears bigger. More coverage. More brilliance. No need to spend extra.

This diamond has an interesting history. Late in the 18th century, King Louis XV of France wanted a diamond shaped like his mistress Madame de Pompadour’s lips. Since then, it has been a symbol of dignity, nobility, and luxury.

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9. Heart Shape Engagement Ring – Symbol of Love

Heart Cut Engagement Ring – Symbol of Love

Best For: Those who want a meaningful, unique, and romantic ring.

Common Settings: Solitaire, bezel, halo, tension.

The heart-shaped lab-made diamond is the ultimate symbol of love, passion, and commitment, making it one of the most romantic choices for an engagement ring. Its distinctive and sentimental shape stands out among other cuts, making it perfect for individuals who want their ring to have deep emotional significance.

A well-cut heart diamond balances symmetry, brilliance, and proportion, ensuring that both lobes are evenly curved and the cleft is well-defined. Because of its complex shape, this cut requires expert craftsmanship to achieve a precise and proportional appearance.

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10. Trillion Shape Engagement Ring – Bold and Contemporary

Trillion Cut Engagement Ring – Bold and Contemporary
Karaters

Best For: Those who want a contemporary and bold statement ring.

Common Settings: Three-stone, bezel, tension, modern solitaire.

The trillion-shape lab diamond ring also called a triangular cut, is bold and modern. The sharp edges, shallow depth, and striking look bounce off light from every angle, which creates an intense light. This shape feels futuristic, unlike round or square diamonds. It’s a great choice for those who love unique, unconventional designs.

Developed in the mid-20th century, the trillion shape has gained popularity. Its defined edges and brilliant shine make it stand out. The wide surface area gives the illusion of a larger size per carat. This makes it a great option for those who want a statement ring.

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11. Asscher Shape Engagement Ring – Vintage and Glamorous

Asscher Cut Engagement Ring – Vintage and Glamorous
Karaters

Best For: Those who appreciate symmetry and vintage glamour.

Common Settings: Antique-style, bezel, halo, three-stone.

The Asscher shape lab diamond has a historic charm. Its deep, square shape gives it an elegant look. The Asscher Brothers of Holland prepared it in 1902, during the Art Deco era, and it gained fame. Even now, many adore its classic elegance.

This shape has smooth symmetry, deep-trimmed corners, and a high crown. The unique “hall-of-mirrors” effect adds depth and shine. Similar to the emerald cut, it reflects light beautifully but with more fire. A visible “X” pattern gives it an architectural appeal. Perfect for those who love structured beauty and vintage style.

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The Bottom Line

The diamond shape reflects your personality and style. Some adore the classic brilliance of a round cut, while others lean toward the sleek, modern look of a princess cut. Vintage styles like Asscher or emerald cuts bring lasting elegance.

Bold choices make a statement, and trillion and marquise cuts stand out with their sharp, eye-catching design. Those who love romance often pick heart or cushion cuts, known for their soft, sentimental charm. The most sparkling, radiant, and round cuts shine the brightest.

The perfect ring is the one that feels just right. Think about your style, daily routine, and setting. Choose a shape that symbolizes your love forever.

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About the Author
Jerry Barnes

Bianca de Leon

Bianca de Leon is a jewelry expert with a strong focus on modern design and conscious luxury. Her background in fashion and materials science gives her a unique perspective on lab grown diamonds and their role in shaping the future of fine jewelry. Bianca’s work emphasizes creativity, ethical values, and personalized style. She excels at translating technical knowledge into relatable insights, helping customers feel confident and informed. For Bianca, jewelry is more than adornment — it's an expression of individuality and purpose.