What Shapes Do Lab Grown Diamonds Come In?
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When you picture a diamond, the classic sparkling stone set in an engagement ring probably springs to mind. But diamonds, whether mined or lab grown, come in a dazzling variety of shapes. Each shape has its own character, style, and way of catching the light. Lab grown diamonds, in particular, offer all the popular shapes you’d expect, plus some interesting twists.
Understanding Lab Grown Diamonds
Before diving into shapes, it’s worth quickly clarifying what lab grown diamonds are. These stones are created in controlled laboratory environments, replicating the natural conditions under which diamonds form deep within the Earth. The result? Real diamonds with the same physical, chemical, and optical properties as mined ones.
Because they’re made in labs, there’s a bit more flexibility in production. This means you can often find lab grown diamonds in a wide range of shapes and sizes, sometimes even more readily than their mined counterparts. The technology behind lab grown diamonds has advanced rapidly, allowing for greater precision and variety.
One of the most fascinating aspects of lab grown diamonds is their environmental impact. Unlike traditional diamond mining, which can lead to significant ecological disruption and a host of ethical concerns, lab grown diamonds are produced with a much smaller carbon footprint. This has led to a growing interest among environmentally conscious consumers who wish to make responsible choices without compromising on quality or beauty. Furthermore, the transparency of the production process allows buyers to feel more secure in their purchase, knowing exactly where and how their diamond was created.
Additionally, lab grown diamonds often come at a more accessible price point compared to their mined counterparts. This affordability opens up opportunities for those who may have previously found natural diamonds out of reach. As a result, couples can invest in larger stones or opt for more intricate designs without the financial strain typically associated with traditional diamond purchases. The increasing popularity of lab grown diamonds has also sparked innovation in jewellery design, as artisans explore new ways to incorporate these stunning gems into unique and contemporary pieces.
The Classic Shapes You’ll Find in Lab Grown Diamonds
Lab grown diamonds come in all the traditional shapes you’d expect. These shapes have stood the test of time, each offering a unique style and brilliance.

Round Brilliant
The round brilliant cut is the most popular diamond shape worldwide, accounting for the majority of diamonds sold. It’s designed to maximise sparkle, with 58 facets expertly arranged to reflect light beautifully. Lab grown round brilliant diamond engagement rings are widely available, often at a more affordable price than mined stones.
This shape suits almost any jewellery style, from solitaire rings to elaborate pendants. Its timeless appeal means it’s a safe bet if you’re unsure which shape to choose. The round brilliant cut has a fascinating history, having been perfected in the early 20th century by Marcel Tolkowsky, who meticulously calculated the ideal proportions to enhance light performance. This enduring design continues to inspire countless variations and adaptations, ensuring its place as a perennial favourite in the world of fine jewellery.
Princess Cut
The princess cut is a square or rectangular shape with pointed corners and brilliant-style facets. It’s the second most popular shape after the round brilliant and offers a modern, edgy look without sacrificing sparkle.
Lab grown princess cut diamonds are especially popular for engagement rings. Their sharp lines and contemporary feel appeal to those wanting something a little different but still classic. This cut was first introduced in the late 1970s and has since gained immense popularity, particularly among younger couples. Its versatility allows it to be set in a variety of styles, from sleek and minimalist to ornate and vintage-inspired, making it a perfect choice for those who wish to express their individual style.
Cushion Cut
Cushion cut diamonds have a soft, pillow-like shape with rounded corners and larger facets. This cut combines a vintage charm with a modern twist, making it a favourite for those who appreciate romantic, timeless designs.
Lab grown cushion cuts often display a warm glow, thanks to their larger facets that enhance fire and brilliance. They’re a great choice for rings and earrings alike. The cushion cut has a rich history, dating back to the 19th century, and has seen a resurgence in popularity in recent years, particularly among those who favour a more classic aesthetic. The unique blend of old-world charm and contemporary elegance makes it a sought-after option for those wishing to celebrate their love with a touch of nostalgia.
Oval
Oval diamonds offer an elongated shape that can make fingers appear slimmer and longer. Their brilliant facets provide plenty of sparkle, similar to round brilliants, but with a more unique silhouette.
Lab grown ovals are popular for engagement rings and pendants, especially for those seeking something elegant yet distinct from the classic round shape. This cut has gained traction in recent years, particularly among celebrities and influencers, who have embraced its sophisticated and flattering form. The oval shape also allows for creative settings, making it a versatile choice for those looking to make a statement while maintaining a sense of grace.
Emerald Cut
The emerald cut is a rectangular shape with step-cut facets, creating a hall-of-mirrors effect rather than the fiery sparkle of brilliant cuts. This shape emphasises clarity and colour, so it’s best suited to high-quality stones.
Lab grown emerald cuts have grown in popularity among those who prefer understated elegance and vintage-inspired designs. The emerald cut is often associated with old Hollywood glamour, having been favoured by iconic figures such as Elizabeth Taylor and Grace Kelly. Its sophisticated lines and unique light play make it a timeless choice for those who appreciate the finer things in life, allowing the beauty of the stone itself to take centre stage.
Marquise
The marquise cut is an elongated shape with pointed ends, designed to maximise carat weight and create the illusion of a larger stone. It’s a bold, eye-catching shape that stands out in any setting.
Lab grown marquise diamonds appeal to those wanting a dramatic, regal look. They’re less common but increasingly sought after for unique engagement rings and statement jewellery. The marquise cut has an intriguing backstory, believed to have been commissioned by King Louis XV of France to resemble the lips of his mistress, the Marquise de Pompadour. This romantic history adds an extra layer of allure to the marquise, making it a captivating choice for those who wish to incorporate a touch of royal elegance into their jewellery collection.
Pear Shape
Pear-shaped diamonds combine the round and marquise cuts, with one rounded end and one pointed end. This teardrop shape is elegant and versatile, often used in earrings and pendants as well as rings.
Lab grown pear shapes offer a graceful silhouette that flatters many hand shapes and styles. This unique cut has been a favourite among celebrities, often seen adorning the fingers of style icons and red carpet attendees. The pear shape's ability to catch and reflect light beautifully makes it an excellent choice for those who desire a piece that is both striking and sophisticated, while its versatility allows it to be incorporated into a variety of settings, from classic to contemporary.
Less Common and Fancy Shapes in Lab Grown Diamonds
Beyond the classics, lab grown diamonds are also available in some less conventional shapes. These fancy shapes can add personality and flair to your jewellery.
Heart Shape
The heart shape is an unmistakable symbol of love and romance. It’s essentially a modified pear shape with a cleft at the top, requiring precise cutting to achieve perfect symmetry.
Lab grown heart-shaped diamonds are a charming choice for romantic gifts or unique engagement rings. They’re not as common, so they make a lovely statement if you want something truly special.
Trilliant Cut
Trilliant, or trillion, cut diamonds are triangular with pointed corners and brilliant facets. They can be used as centre stones or as side stones to complement other shapes.
Lab grown trilliant diamonds add a modern, geometric edge to jewellery, perfect for those who favour contemporary styles.
Asscher Cut
The Asscher cut is a square shape with deeply trimmed corners and step-cut facets, similar to the emerald cut but with a more square outline. It has a vintage, art deco feel.
Lab grown Asscher cuts are popular among those who appreciate classic elegance with a bit of flair. Their clarity and depth are showcased beautifully in this shape.
How Shape Affects the Appearance of Lab Grown Diamonds
Shape isn’t just about how a diamond looks on paper-it influences how it interacts with light, how large it appears, and even how it fits into jewellery designs.

For example, brilliant cuts like round, oval, and princess maximise sparkle and fire, making the diamond dazzle in different lighting conditions. Step cuts like emerald and Asscher focus more on clarity and depth, offering a sophisticated, mirror-like shine.
Elongated shapes such as marquise, oval, and pear can create the illusion of greater size and length, which is flattering on the finger. Meanwhile, shapes like cushion and heart bring a softer, romantic vibe.
Choosing the Right Shape for You
Picking a diamond shape is a personal decision. There isn't a one size fits all answer to "Which shape diamond should I pick?" It depends on your style, the jewellery piece, and how you want the diamond to look and feel.
Consider your lifestyle too. For example, round and princess cuts are durable and practical for everyday wear, while shapes with pointed edges like marquise or pear might need protective settings to avoid chipping.
Try on different shapes in person if you can. Seeing how a diamond shape complements your hand and suits your taste is invaluable. Lab grown diamonds make this easier, as their affordability allows for experimenting with different shapes without breaking the bank.
Final Thoughts on Lab Grown Diamond Shapes
Lab grown diamonds offer all the shapes you love, from timeless classics to bold, fancy cuts. Their versatility means there’s a perfect shape out there for everyone, whether you want something traditional or a bit more adventurous.

Understanding the characteristics of each shape helps you make an informed choice, ensuring your diamond shines brilliantly for years to come.
Discover Your Ideal Diamond Shape with Luvien Jewellery
Now that you're acquainted with the captivating array of shapes lab-grown diamonds can offer, it's time to find the one that speaks to you. At Luvien Jewellery, we're dedicated to helping you discover the perfect lab-grown diamond that embodies your unique love story. Embrace the beauty, sustainability, and ethical elegance of our carefully curated engagement rings. Shop Now and let us guide you to the ideal symbol of your everlasting commitment.