All About Fancy Shape Diamonds for Your Perfect Engagement Ring

When we talk about a “fancy shape” diamond, we simply mean any diamond shape other than the classic round brilliant. Round diamonds are timeless and deliver maximum sparkle, but fancy shapes open the door to something more personal, whether your taste runs modern, vintage, or traditional with a twist. Each shape carries its own personality, and choosing one is a wonderful way to make your engagement ring feel entirely your own.

There are practical reasons to love fancy shapes too. Elongated cuts like oval, marquise, and pear can appear larger than a round diamond of the same carat weight because their shape spreads across the finger. Fancy shapes also tend to offer more diamond for your budget, since cutting a round brilliant removes more of the original rough stone. Below we walk through seven of our favorite fancy shapes, grouped into the two families they naturally fall into, and you can always book an appointment to see them side by side in person.

Classic Shapes: Princess, Emerald, and Cushion

These three share a squared or rectangular outline, and the differences between them come down to faceting. The princess cut is a modern square with brilliant faceting, so it throws sparkle that comes remarkably close to a round while keeping crisp, contemporary lines. The emerald cut takes the opposite approach with long step-cut facets and an open table, creating a hall-of-mirrors effect instead of fire, which is why it rewards a stone with lovely clarity. The cushion cut softens the corners into a pillowy outline that pairs naturally with vintage-inspired designs and sits beautifully in halo and three-stone settings.

Eternalle 14k Yellow Gold Lab-Grown Diamond Engagement Ring 3 ct. tw.

• Princess cut center diamond, included with the ring
• 14k yellow gold from our Eternalle lab-grown collection
• Prong-set center, 3 ct. total weight

Poem 14k White Gold Natural Diamond Engagement Ring 1 1/4 ct. tw.

• Emerald cut center diamond, included with the ring
• 14k white gold from the Poem collection, natural diamonds
• Prong-set center, 1 1/4 ct. total weight

14k Yellow Gold Natural Diamond Engagement Ring Setting 1/5 ct. tw.

• A setting built for a cushion cut center, chosen separately
• 14k yellow gold with natural accent diamonds
• 1/5 ct. tw. of accent stones along the setting

Elongated Shapes: Oval, Marquise, and Pear

Length is what these three share, and how each one ends is what separates them. The oval is essentially a stretched round brilliant, keeping that lively sparkle in a softened outline with no vulnerable points. The marquise comes to a point at both ends, which gives it a regal, distinctive presence but means those tips want a setting that shields them. The pear splits the difference, with one rounded end and one point. All three are worth inspecting in person for the bow-tie effect described in the questions below.

Verragio 14k White Gold Natural Diamond Engagement Ring Setting 5/8 ct. tw.

• A setting built for an oval center, chosen separately
• 14k white gold, rhodium plated, from designer Verragio
• 5/8 ct. tw. of natural accent diamonds

Eternalle Platinum Lab-Grown Diamond Engagement Ring 2 ct. tw.

• Marquise cut center diamond, included with the ring
• Platinum from our Eternalle lab-grown collection
• Platinum prong-set center, 2 ct. total weight

Eternalle 14k Yellow Gold Lab-Grown Diamond Engagement Ring 3 1/2 ct. tw.

• Pear shape center diamond, included with the ring
• 14k yellow gold from our Eternalle lab-grown collection
• Prong-set center, 3 1/2 ct. total weight

Where the Radiant Cut Fits

The radiant sits between the two families above, which is exactly what makes it worth knowing about. It takes the trimmed rectangular outline of an emerald cut and applies the brilliant faceting of a round, so you get clean modern lines with real fire rather than the emerald’s quieter mirror effect. Its cropped corners also make it durable and easy to wear day to day. If you like the shape of an emerald cut but want more sparkle from it, browse our radiant cut engagement rings.

The Robbins Brothers Difference

Fancy shapes are the part of diamond buying where photographs help least. A marquise and a pear of identical carat weight look nothing alike on a hand, and a bow-tie that barely registers in a product shot can be obvious in daylight. We have been putting stones in front of couples since 1921, and our VIP diamond viewing rooms exist so you can compare shapes under proper light rather than on a screen.

Only about one in ten diamonds meets our standards, so the shapes you see with us have already been through that filter. We are employee owned, our master jeweler works in house for custom settings and resetting work, and you are welcome at any of our showrooms across California, Arizona, Texas, and Washington.

Frequently Asked Questions

What is a fancy shape diamond?

A fancy shape is any diamond shape other than the round brilliant, including princess, emerald, oval, marquise, cushion, pear, and radiant. Each one has a distinct outline and faceting style, so the best way to understand the differences is to view several together. Our diamond experts are happy to walk you through them at any of our showrooms across California, Arizona, Texas, and Washington.

Which fancy shape sparkles the most?

Brilliant-faceted shapes such as oval, pear, princess, and radiant tend to sparkle the most because their faceting is designed to return light much like a round diamond. Step-cut shapes like the emerald trade that fiery sparkle for a sleek, mirror-like elegance. If sparkle is your priority, we can show you these cuts side by side so you can see the difference for yourself.

Do fancy shapes really look bigger than round diamonds?

Often, yes, and it helps to know why. Carat is a measure of weight, not size, so two stones of equal carat can present very differently depending on how that weight is distributed. The trade-off is that a stone cut to spread wide can end up shallow, which costs it light return, so a well-cut oval will outperform a poorly cut one of the same outline. We are glad to put two side by side so you can see where that line falls.

What is the bow-tie effect in oval, marquise, and pear diamonds?

The bow-tie is a shadow that can appear across the center of elongated shapes when light does not reflect evenly through the stone. A well-cut diamond minimizes it, so a faint or barely visible bow-tie is the goal. We always encourage guests to inspect elongated stones in person, and we are glad to help you spot a cut with excellent light performance.

What settings work best for elongated fancy shapes?

Elongated shapes like oval, marquise, pear, and emerald look wonderful in solitaire, halo, and three-stone settings, and many benefit from a secure prong arrangement that protects any pointed ends. East-west orientations are a fun, modern option too. Our jewelers can recommend a setting that flatters your chosen shape and suits your daily lifestyle.

Can I get a fancy shape in both natural and lab-grown diamonds?

Yes. Every fancy shape is available in both natural and lab-grown diamonds, and both are real diamonds with the same physical and optical properties. Lab-grown stones often let you choose a larger or higher-quality diamond within your budget. We carry both so you can compare them together and decide what feels right.

Can you create a custom ring around a fancy shape diamond?

Absolutely. Our master jeweler can design a one-of-a-kind ring around the fancy shape you love, tailoring the setting, metal, and accent stones to your vision. Custom design is one of our favorite ways to help guests create something truly personal, so start by booking a consultation with our team.

Do I need an appointment to shop fancy shape engagement rings?

Appointments are welcome and let us set aside dedicated time to show you a range of shapes, but walk-ins are always happy to browse too. Booking ahead simply means a diamond expert is ready to guide you from the moment you arrive. You can reserve a time online or stop by whenever it is convenient.

Or find a Robbins Brothers near you to see these shapes side by side with an expert.