Most Popular Lab Grown Diamond Cuts & Why They Matter

The cut of a diamond is something that decides the overall look and sparkle of it. These cuts play a huge role in how a diamond looks, how it catches light, and shines, and even how much it costs.

Lab-grown diamonds are the same as natural diamonds, the only difference is they are made in a lab under controlled environments. They are cut and polished in the same way and come in all the classic cuts people love. You can choose from the classic round shape, something more modern like an emerald cut, or a vintage look like a cushion cut, there is a style for everyone.

In this post, we'll discuss the most popular cuts for lab grown diamonds, what makes each one special, and how to pick the one that is right for your specific type of jewelry.

Why is the Cut of a Lab-Diamond Important?

The cut is what makes a lab diamond really shine and look full of life. If the cut is not done right, even a beautiful diamond can end up looking dull. Here is why the right cut matters so much:

1. Cut Impacts Brilliance and Sparkle

Light reflection depends on the cut. A well-cut diamond catches the light, bounces it inside, and sends it back through the top. This makes it shine, look vivid, and glow with fire.

A poor cut does the opposite. It makes the diamond look dull or lifeless. If too shallow, light escapes through the bottom, reducing its shine. If too deep, light leaks from the sides instead of returning to the eye.

2. Cut vs Shape - What’s the Difference?

A lot of people think diamond cut and shape are the same. But they’re not.

Cut is about how the diamond’s angles, facets, and proportions affect its sparkle. Shape is the actual form, round, oval, princess, or emerald. Shape is how a diamond looks, and cut controls how much it shines.

A round diamond, for example, is a shape. But different cutting styles can change how much light it reflects. While emerald-cut lab diamonds have a step-cut pattern that gives it a sleek, mirror-like effect instead of a dazzling flash.

3. Precision Cutting in Lab-Grown Diamonds

Lab-grown diamonds have a significant edge, their cutting technique is precise. Natural diamonds take millions of years to form, their conditions are unpredictable. But lab-created diamonds grow in a controlled setting. This makes their cuts more consistent and accurate.

Perfect symmetry and proportion - Laser-guided cutting enhances their brilliance.
Fewer flaws - Created in ideal conditions, they have minimal imperfections, boosting their sparkle.
Better quality control - Each diamond goes through strict checks to ensure maximum light reflection.

These diamonds are also ethical and eco-friendly. More people now prefer sustainable, conflict-free gemstones.

8 Most Popular Cuts for Lab-Grown Diamonds

The technology makes it easy to cut diamonds into your desired shape to personalize your jewelry.

1. Round Brilliant Cut - Incredible Sparkle

The round brilliant cut shines like no other, it was designed over a century ago and is still the top pick today, especially for engagement rings. Each facet is framed to capture light and bounce it back, which makes it sparkle beautifully.

The perfect symmetry boosts brilliance, making the diamond glow from every angle. The circular shape of the lab diamond enhances light reflection and fits beautifully in many jewelry styles.

Specifications

Facets: 58 (33 on the crown, 25 on the pavilion)
Table Percentage: Ideal range is 53% to 60% of the diamond's diameter
Depth Percentage: Optimal range is 58.5% to 62.5%
Crown Angle: Ideal between 33° and 36°
Pavilion Angle: Optimal between 42° and 44°

Every detail matters. The right proportions bring out the best shine. This standard applies to both natural and lab-grown diamonds.

Our Picks for Round Brilliant Cut Lab-Grown Diamond Jewelry

2. Princess Cut - Contemporary Design

Princess cut diamonds have a modern and stylish look. They sparkle beautifully. Their square or slightly rectangular shape adds a bold yet classy touch.

People have used the Princess diamond cut since the 1960s. Some call it a "square modified brilliant." The four angled sides of a princess cut lab diamond resemble an upside-down pyramid. This cut keeps more of the diamond’s original form while increasing its shine. It also costs less than a round cut, making it a popular choice.

Specifications

Facets: 57 or 76, based on the pavilion design
Table Percentage: Best between 67% and 72%
Depth Percentage: Ideal between 64% and 75%
Crown Height: Around 10% to 15% of the diamond’s depth
Length-to-Width Ratio: A ratio of 1.00 to 1.05 keeps the square look

This cut keeps more of the original crystal while delivering great brilliance. It’s a smart and stylish choice.

Recommended Options for Princess Cut Lab-Grown Diamond Jewelry

3. Oval Cut - Elegant and Elongated

Lazare Kaplan presented the oval cut diamond late in the 1960s. The oval shape brings together classic sparkle and modern beauty. It's long, balanced design makes the diamond shine brighter and looks bigger. Many people love it for its elegant yet lasting appeal.

Oval diamonds have smooth curves that match many ring styles, like solitaire or halo. They suit different tastes, the length-to-width ratio matters when picking one. Some may show a bow-tie effect, changing how they reflect light. Looking at these details helps you get a diamond that shines beautifully.

Specifications

Facets: Usually 57 to 58
Table Percentage: Best range falls between 53% and 63%
Depth Percentage: Ideal range stays between 58% and 62%
Length-to-Width Ratio: Typically from 1.35 to 1.50, based on preference
Bow-Tie Effect: A dark shadow across the center; less of it means a better cut

This shape highlights carat weight well and gives a fresh choice compared to classic cuts.

Recommended Oval Cut Lab-Grown Diamond Jewelry

4. Emerald Cut - Sophisticated and Chic

The emerald-cut diamond has a stylish, eternal appeal. The long, rectangular shape gives it a unique charm. Unlike brilliant cuts that maximize shine, this one features step-cut facets. These are long, straight lines that create a "hall of mirrors" effect. They create a deep, clear, and elegant look. The emerald cuts reflect light in a soft, subtle way, this highlights the beauty of a diamond.

A big advantage of this cut is that it makes the diamond seem larger than its actual weight. The broad surface area creates this illusion. It also gives the finger a slim, graceful appearance, making it a popular choice in different settings. The large, open facets make flaws and color tints stand out more. Choosing a diamond with better clarity and color helps keep its beauty intact.

Specifications

Facets: 50 to 58, arranged in parallel
Table Percentage: The best range is 61% to 69%
Depth Percentage: Ideal between 61% and 67%
Crown Height: Usually 11% to 15% of total depth
Length-to-Width Ratio: Mostly between 1.30 and 1.50, with 1.40 being the classic choice

The large, open facets make inclusions more noticeable. That’s why diamonds with this cut need a higher clarity grade.

Emerald Cut Lab-Grown Diamond Jewelry Options

5. Cushion Cut - Soft and Romantic

A cushion-like appearance makes this diamond look soft and graceful. Smooth, rounded edges enhance its delicate feel. The square or rectangular form adds timeless beauty. The 58 to 64 facets, create a captivating mix of shine and depth. A perfect choice for romantic jewelry.

Specifications

Facets: Usually 58 to 64, sometimes with a “crushed ice” effect.
Table Size: Best between 58% and 68%.
Depth: The ideal range is 61% to 68%.
Crown Height: About 12% to 17% of the depth.
Shape Ratio: 1.00 to 1.05 for a square shape, up to 1.15 for a rectangular look.

The cut style changes how much it shines. Some give off a bold sparkle, while others have a softer glow.

Recommended Jewelry Options for Cushion Cut Lab Grown Diamonds

6. Pear Cut - Unique and Eye-Catching

A pear-cut diamond gives the appearance of a teardrop. A combination of round and marquise cuts gives them a unique shape. The 56 to 58 facets enhance the sparkles brilliantly. The elongated design gives fingers a longer, elegant look. A bold yet graceful choice for statement jewelry.

Specifications

Facets: Usually 56 to 58
Table Percentage: Ideal between 53% and 65%
Depth Percentage: The best range is 58% to 64%
Length-to-Width Ratio: Falls between 1.45 and 1.75, based on the desired look
Bow-Tie Effect: Some may have it, but a well-cut diamond reduces this flaw.

Jewelry Options Featuring Pear Cut Lab-Grown Diamonds

7. Marquise Cut - Bold and Dramatic

A marquise-cut diamond has pointed ends and a stretched shape. This design makes it seem bigger and also creates a striking and elegant effect. This cut also adds elegance and uniqueness. This cut also adds elegance and uniqueness.

Specifications

Facets – Usually 57 in total. The crown has 33, and the pavilion has 24.
Table Percentage – Ideally between 53% and 63% of the diamond’s width.
Depth Percentage – Best within 58% to 62%.
Length-to-Width Ratio – Falls between 1.75 and 2.15. This affects how slender or wide the diamond looks.
Symmetry – Must be precise. Misaligned points can ruin the balance and affect the beauty.

This cut increases the visible surface, making the stone seem larger. It also creates an illusion of longer fingers. But balance matters. Poor symmetry can make the shape look off.

Recommended Jewelry Featuring Marquise Cut Lab-Grown Diamond

8. Radiant Cut - Brilliant and Fiery

The Radiant Cut is a combination of Emerald Cut with the beauty of the Round Brilliant Cut. The cut was created in the late 1970s and keeps a square or rectangular shape. The slightly cropped corners give it a special look.

Specifications

Facets: Usually 70 in total. There are 25 on the crown, 8 on the girdle, and 37 on the pavilion.
Table Size: Best between 58% and 70% of the diamond’s width.
Depth: The ideal range is 59% to 70% of the width.
Shape Ratio: Square (1.00) or slightly rectangular (up to 1.35). A range of 1.15 to 1.25 gives a soft rectangle.

This cut catches light well, creating a bright sparkle. Cropped corners of Lab diamonds add extra strength, which makes it a solid choice for different jewelry designs.

Recommended Jewelry Featuring Radiant Cut Diamond

How to Choose the Right Lab Diamond Cut for You?

You need to ponder before selecting a lab-grown diamond cut. The shape should fit your tone, suit your hand, and match the setting. This simple guide will help you decide.

1. Personal Style

Your taste matters most when choosing a diamond cut.

Love classic styles? The Round Brilliant or Emerald Cut could be just right. The lab diamond in round cut flares the most and never loses its charm. The Emerald Cut, with its long, clean lines, has a vintage and sleek feel.

Like something sleek? The Princess and Radiant Cuts are both great choices. Sharp square edges make the Princess Cut look bold with a modern and stylish touch. The Radiant Cut takes the shape of an Emerald while sparkling like a Round cut creating a bright and trendy glow.

Looking for something different? The Pear or Marquise Cut could be the one. The Pear Cut, shaped like a teardrop, feels both timeless and unique. The Marquise Cut stands out with its pointed ends. It adds a dramatic touch and even makes the diamond seem bigger.

2. Setting Compatibility

The setting keeps the diamond secure and affects how it looks:

Halo Settings: A bold diamond takes the center spot. Small stones around it create an illusion of size and shine. This design is perfect for Oval, Princess, and Cushion Cuts, and brings extra sparkle, making the ring stand out.

Solitaire Settings: One diamond shines as the star in this classic design. The beauty of its cut and clarity stands out. Round Brilliant, Emerald, and Radiant Cuts look elegant in solitaire settings. Their unique shapes stay fully visible.

Think about your style, body shape, and setting choice. The right lab-grown diamond cut brings out your best features; it creates a balanced look. Every detail matters when picking the perfect shape. A well-cut diamond makes jewelry shine effortlessly.

The Bottom Line

The right diamond suits your style. The cut depends on your taste, the setting, and the level of sparkle you prefer. Round stays classic, while radiant brings a fresh look. Each shape stands out in its own way.

Karaters brings you dazzling lab-grown diamonds, ethically sourced and expertly crafted. Searching for an engagement ring? An anniversary gift? Or something special just for you? Explore our exclusive jewelry collection.