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What Shapes Are The Best Lab Grown Diamonds

10/5/2026
What Shapes Are The Best Lab Grown Diamonds

What Are the Best Shapes for Lab-Grown Diamonds?

Choosing the perfect diamond shape is one of the most exciting parts of designing an engagement ring or fine jewelry piece. While the traditional round brilliant diamond remains a timeless favourite, lab-grown diamonds have opened the door to even more creative options, allowing couples to select larger, unique shapes while staying within their preferred budget.

Lab-grown diamonds are real diamonds with the same chemical, physical, and optical properties as mined diamonds. They are available in all of the most popular diamond shapes, including round, oval, emerald, cushion, pear, radiant, and more.

At John Atencio, the best lab-grown diamond shape is ultimately the one that reflects your personal style, the design of your ring, and how you want your diamond to look when worn every day.

 

 

Round Brilliant Lab-Grown Diamonds: The Timeless Classic

The round brilliant diamond continues to be one of the most popular choices for engagement rings because of its exceptional sparkle and versatility. Its carefully designed facet pattern maximizes light reflection, creating the iconic brilliance many people associate with diamonds.

A round lab-grown diamond is a great choice for someone who loves:

  • Classic and traditional engagement rings

  • Maximum brilliance and sparkle

  • A style that will remain timeless

  • A diamond shape that works with nearly any setting

Round diamonds pair beautifully with solitaire settings, halo designs, hidden halos, and classic three-stone engagement rings.

 

 

Oval Lab-Grown Diamonds: Elegant and Modern

Oval diamonds have become one of the most sought-after lab-grown diamond shapes because they offer a beautiful combination of brilliance and a larger appearance.

The elongated silhouette can make the diamond appear larger than a round diamond of the same carat weight, while also creating a flattering look on the finger.

Oval lab-grown diamonds are ideal for those who want:

  • A modern alternative to the classic round shape

  • A larger-looking center stone

  • A graceful, elongated appearance

  • A sophisticated engagement ring style

Oval diamonds are especially popular in solitaire, hidden halo, and vintage-inspired settings.

 

 

Emerald-Cut Lab-Grown Diamonds: Sophisticated and Elegant

Emerald-cut diamonds are known for their clean lines, step-cut facets, and sophisticated appearance. Instead of producing intense sparkle like a round brilliant, emerald cuts showcase a diamond’s clarity and create a beautiful “hall of mirrors” effect.

An emerald-cut lab-grown diamond is perfect for someone who appreciates:

  • Art Deco-inspired designs

  • Sleek and elegant jewelry

  • A refined, understated look

  • A diamond shape that highlights clarity

Because emerald cuts have a more open facet structure, choosing a higher clarity diamond can be especially important.

 

 

Cushion-Cut Lab-Grown Diamonds: Romantic and Vintage-Inspired

Cushion-cut diamonds combine a classic square shape with softly rounded edges, creating a romantic and timeless appearance.

This shape has remained popular for engagement rings because it offers:

  • A vintage-inspired feel

  • Soft, elegant curves

  • Beautiful fire and sparkle

  • A unique alternative to traditional shapes

Cushion-cut lab-grown diamonds look stunning in halo settings, three-stone rings, and custom-designed jewelry.

 

 

Radiant-Cut Lab-Grown Diamonds: Maximum Sparkle With a Modern Shape

Radiant-cut diamonds offer the best of both worlds by combining a rectangular or square outline with brilliant-cut facets designed for sparkle.

They are a great choice for someone who wants:

  • The elongated look of an emerald or oval diamond

  • The brilliance of a round diamond

  • A bold and contemporary engagement ring

  • A larger visual presence

Radiant lab-grown diamonds are especially popular for statement engagement rings.

 

 

Pear-Shaped Lab-Grown Diamonds: Unique and Eye-Catching

Pear-shaped diamonds feature a combination of a round brilliant and marquise shape, creating a distinctive teardrop silhouette.

They are perfect for someone looking for:

  • A unique engagement ring

  • A feminine and elegant design

  • A diamond with personality

  • A shape that stands out from traditional styles

Pear diamonds can be worn with the point facing toward or away from the hand, allowing for different styling options.

 

 

Marquise Lab-Grown Diamonds: A Bold Statement Shape

The marquise diamond is known for its elongated shape and pointed ends, creating an impressive appearance with significant finger coverage.

Benefits of a marquise lab-grown diamond include:

  • A larger-looking diamond appearance

  • A distinctive vintage-inspired style

  • A dramatic and elegant silhouette

This shape is ideal for someone who wants an engagement ring that feels unique and fashion-forward.

 

 

Princess-Cut Lab-Grown Diamonds: Modern and Classic

Princess-cut diamonds feature a square shape with brilliant-cut facets that provide excellent sparkle.

They are a popular choice for those who love:

  • Clean geometric designs

  • Modern engagement rings

  • A balance between classic and contemporary styles

Princess-cut lab-grown diamonds work beautifully in solitaire, halo, and channel-set designs.

 

 

Which Lab-Grown Diamond Shape Looks the Biggest?

If size appearance is a priority, certain diamond shapes tend to look larger because of their elongated outlines and surface area.

Some of the shapes that often create a larger appearance include:

  1. Oval

  2. Marquise

  3. Pear

  4. Radiant

  5. Emerald

Because lab-grown diamonds are often chosen for their ability to provide a larger center stone at a different price point, these elongated shapes are especially popular among couples looking for a statement engagement ring.

 

 

Which Lab-Grown Diamond Shape Has the Most Sparkle?

Sparkle depends on more than just shape. Diamond cut quality, proportions, clarity, and craftsmanship all play important roles.

Shapes known for exceptional brilliance include:

  • Round brilliant

  • Oval

  • Radiant

  • Cushion

  • Princess

If maximum sparkle is your priority, focus on the diamond’s cut quality and overall craftsmanship rather than shape alone.

 

 

How to Choose the Best Lab-Grown Diamond Shape for Your Ring

When selecting a lab-grown diamond, consider:

Your Personal Style

Do you prefer classic, modern, vintage, or bold designs?

Your Ring Setting

Some shapes complement specific settings better than others. For example:

  • Round diamonds pair beautifully with timeless solitaires.

  • Oval diamonds create elegant elongated designs.

  • Emerald cuts complement sleek, sophisticated settings.

  • Pear and marquise diamonds create more distinctive looks.

Your Lifestyle

A lower-profile setting with rounded edges may be ideal for someone who wants an everyday ring that is easy to wear.

Your Desired Diamond Size

Elongated shapes can provide more visual impact and finger coverage compared to some traditional shapes.

 

 

Design Your Perfect Lab-Grown Diamond Engagement Ring With John Atencio

There is no single “best” lab-grown diamond shape—the right choice depends on your personality, style, and the story you want your ring to tell.

Whether you love the timeless brilliance of a round diamond, the modern elegance of an oval, or the unique beauty of a pear or emerald cut, John Atencio can help you create a custom engagement ring designed around your vision.

Explore lab-grown diamond engagement rings and discover a shape that feels uniquely yours.

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