Choosing an engagement ring is one of the most personal purchases you will ever make, and the diamond shape sets the tone for everything else. The shape shapes the ring's personality, influences how large the stone looks on the hand, and even affects which setting styles work best.
At Jean Pierre Jewelers, we help couples every day find the perfect lab grown diamond at our Woodland Hills showroom. Because lab diamonds offer larger, certified stones at a significantly lower price per carat, many of our clients find they can finally consider shapes and sizes they once thought were out of reach. Here is our guide to choosing the right diamond shape for your lab engagement ring.
Why Diamond Shape Matters More With Lab Grown Diamonds
Lab grown diamonds share the same fire, brilliance, and physical properties as natural diamonds. The difference is value. With a lab diamond, your budget stretches further, which means the shape you choose has an even bigger visual impact. A 3 or 4 carat center stone is realistic for many couples, and at that size, the character of each shape becomes impossible to miss.
Before you fall in love with a single stone, consider three questions:
- What style does the wearer love day to day: classic, modern, vintage, or bold?
- How important is maximum sparkle versus a sleek, sophisticated look?
- What is the wearer's lifestyle, and how much protection does the stone need?
Keep your answers in mind as you explore the most popular lab diamond shapes below.
Round Brilliant: The Timeless Classic
The round brilliant cut is the most popular engagement ring shape for good reason. Its facet pattern is engineered to return as much light as possible, creating unmatched sparkle from every angle. A round diamond pairs beautifully with nearly any setting, from a clean solitaire to a full halo.
Best for: Those who want maximum brilliance and a look that will never go out of style.
Browse our round lab diamond engagement rings, including halo and invisible halo designs that make the center stone appear even larger.
Oval: Elegant, Elongated, and Flattering
Oval diamonds have become one of the most requested shapes in our showroom. They offer sparkle close to a round brilliant, but their elongated outline creates the illusion of a larger stone and makes fingers appear longer and slimmer. Ovals look stunning in a solitaire, an invisible halo, or a two tone setting that blends yellow and white gold.
Best for: Anyone who wants a modern, feminine look with serious presence on the hand.
If you love ovals but want something slightly different, ask us about the moval, a hybrid shape that sits between a marquise and an oval for a distinctive, contemporary profile.
Pear: Romantic and Distinctive
The pear shape combines the rounded body of an oval with the tapered point of a marquise, creating a teardrop silhouette that feels romantic and graceful. Pear diamonds are versatile and can be worn with the point facing toward the fingertip for a lengthening effect.
Best for: Those who want a unique ring that still feels classic and elegant.
Tip: Because the point is the most delicate part of the stone, we recommend a setting with a protective prong or a halo to guard it from everyday knocks.
Emerald: Sophisticated Vintage Glamour
Emerald cut diamonds feature step cut facets and a rectangular outline that create a "hall of mirrors" effect. Rather than scattered sparkle, emerald cuts deliver bold flashes of light and remarkable clarity of form. This shape has a refined, old Hollywood elegance that looks especially striking at larger carat weights.
Best for: Minimalists and anyone drawn to architectural, vintage inspired design.
Tip: Because the open table of an emerald cut shows more of the stone's interior, clarity matters more here than with brilliant cuts. Our team can help you select a certified lab diamond that looks clean to the eye.
For a modern twist, consider an emerald cut in a bezel setting, which frames the stone with a sleek metal rim and offers excellent protection.
Cushion: Soft, Romantic, and Full of Fire
Cushion cut diamonds have rounded corners and larger facets, giving them a pillowy shape and rich, fiery sparkle. We offer both square cushions, which feel classic and balanced, and elongated cushions, which offer a longer silhouette similar to an oval with a vintage feel.
Best for: Those who love antique inspired jewelry but still want plenty of sparkle.
Princess: Crisp, Modern Brilliance
The princess cut is square with sharp corners and a brilliant facet pattern that delivers impressive sparkle. It offers a clean, contemporary look that pairs well with both yellow and white gold.
Best for: Modern style lovers who want sparkle with geometric structure.
Tip: Protect those pointed corners with V prongs or a halo setting to reduce the risk of chipping.
Marquise: Bold and Dramatic
The marquise is a long, boat shaped diamond with pointed ends. It offers one of the largest surface areas per carat of any shape, so it looks impressively big on the hand. The marquise carries a vintage personality and makes a confident statement.
Best for: Someone who wants maximum visual size and a ring that stands apart.
How to Match the Shape to the Setting
Once you have a favorite shape, the setting brings it to life. At Jean Pierre Jewelers, we craft engagement rings in 14k white gold, 14k yellow gold, and two tone combinations. Here are a few pairings we love:
- Solitaire: Lets any shape shine on its own, especially rounds, ovals, and emerald cuts.
- Halo: Adds sparkle and makes the center stone appear larger, ideal for round, cushion, and pear shapes.
- Invisible or hidden halo: Adds a surprise ring of diamonds beneath the center stone, visible from the side profile.
- Diamond band: Adds sparkle along the shank, complementing elongated shapes beautifully.
- Bezel: Offers a sleek, modern look and superior protection for active lifestyles.
Consider Lifestyle and Durability
Diamonds are extremely hard, but shapes with points (pear, marquise, princess) need thoughtful protection. If the wearer works with their hands, is very active, or simply prefers low maintenance, consider a round, oval, or cushion shape, or choose a protective setting like a bezel.
Always Choose a Certified Lab Diamond
Whatever shape you choose, insist on certification. Our lab grown diamonds come with GIA or IGI certification, so you know exactly what you are getting in terms of cut, color, clarity, and carat weight. Certification gives you confidence today and valuable documentation for insurance and future upgrades.
Can't Decide? Design Your Own
If none of the shapes or settings you see match the ring you are imagining, our custom engagement ring design service can bring your vision to life. Our master jewelers and CAD designers source the ideal lab diamond in any shape or carat weight, help you select the metal and setting details, and provide 3D renderings so you can preview and refine your ring before a single stone is set.
Find Your Perfect Shape at Jean Pierre Jewelers
The best diamond shape is the one that makes your heart skip a beat every time you look at it. Seeing shapes side by side in person is often the fastest way to find your favorite, so we invite you to visit our Woodland Hills showroom at 21400 Ventura Boulevard.
Schedule an appointment or call us at (818) 347-5500 to start exploring our lab diamond engagement rings today.
