Popular Diamond Shapes for Women’s Lab-Grown Diamond Rings

Shape sets the look of a ring more than almost anything else. Two rings with the same carat weight can feel completely different depending on whether the diamond is a crisp round, a soft cushion, or a long, elegant emerald.

With a lab-grown diamond, you get to choose the shape you actually love, because the shape no longer has to be set by what fits the budget. Here is how the popular shapes look and wear, and how to pick the one that suits you.

Quick answer: Round sparkles the most and is the classic choice. Oval, pear, marquise and radiant look larger for their weight and lengthen the finger. Emerald and Asscher are elegant step cuts that show more of the stone. Cushion is soft and vintage, and princess is a modern square. Pick the outline you keep coming back to.

The Most Popular Diamond Shapes, at a Glance

Shape	Look	Sparkle	Good to know
Round	Classic, timeless	The most brilliant	Hides color and inclusions well
Oval	Elongated, elegant	Brilliant	Looks larger for its weight; watch for a bow-tie
Emerald	Clean, understated	Long flashes, not sparkle	Shows inclusions more; buy eye-clean
Pear	Teardrop, distinctive	Brilliant	Point needs a protective setting
Cushion	Soft, vintage	Brilliant, romantic	Rounded corners, pillowy outline
Princess	Modern square	Brilliant	Sharp corners need protection
Radiant	Elongated, lively	Brilliant	Emerald outline with round-style sparkle
Marquise	Long, dramatic	Brilliant	Looks largest for its weight; watch for a bow-tie

 

Round, Oval and the Elongated Shapes

Round is the most popular shape for a reason. A round brilliant returns the most light of any cut, so it sparkles hardest and hides a little color or a small inclusion more forgivingly than most (which is partly why it stays the most requested). It suits almost any setting.

If you want length rather than a circle, the elongated shapes are worth a look. An oval, a pear, a marquise or a radiant all stretch the diamond along the finger, so they cover more surface for the same carat weight and can make the finger look longer.

One honest caveat: oval, pear and marquise can show a bow-tie, a darker band across the center, if the stone is cut poorly. A well-cut example keeps it faint, which is one more reason to look at the actual stone rather than the grades alone.

Emerald and Asscher: The Step Cuts

Emerald and Asscher work differently from the brilliant cuts. Instead of lots of small sparkle, they have long, straight facets that flash like a hall of mirrors, for a calmer and more understated look.

The downside? Step cuts have large, open facets, so they show inclusions and color more than a round does. With an emerald cut or an Asscher, it is worth choosing a stone that looks clean to the eye rather than chasing the look on paper.

Cushion, Princess and the Rest

Cushion is a square or rectangular shape with soft, rounded corners, which gives it a gentle, vintage feel while still sparkling brightly. Princess is the modern square, crisp and bright, though its sharp corners are worth protecting with the setting.

Heart is the most romantic outline and needs skilled cutting to look symmetrical. Like the pear and marquise, its point sits more safely in a setting that shields it.

Which Shape Looks Biggest for Its Carat?

If size for your money is the goal, the elongated shapes win. Oval, marquise, pear and radiant spread their weight along the finger, so they look larger face-up than a round or a princess of the same carat.

That does not make them better, only bigger-looking. A round can still look more brilliant, and some people simply prefer its outline. It depends what you are optimizing for.

The shape you love matters more than the shape that looks biggest, because you will see that outline on your hand every day.

How to Choose a Shape

The shape is personal, so start with what you are drawn to rather than what is popular:

• By taste. Classic and sparkly points to round or cushion. Clean and modern points to emerald or princess. Elegant and elongated points to oval or radiant.
• By finger. Longer shapes can flatter shorter fingers, while almost any shape works on a longer finger (the only real test is trying a few on).
• By sparkle. If you love fire and flash, choose a brilliant cut. If you prefer a quieter, glassy look, a step cut suits you better.

For how shape plays alongside carat and setting, our guide to how shape works with carat and setting covers the full picture.

FAQs

Which diamond shape sparkles the most?

The round brilliant sparkles the most, because its faceting is designed to return the most light. Radiant and cushion are close behind among the brilliant cuts.

Which shape looks biggest for its carat?

Elongated shapes like oval, marquise, pear and radiant look largest for their weight, since they spread across more of the finger than a round or princess.

Which shapes show inclusions the most?

Step cuts like emerald and Asscher show inclusions and color more than brilliant cuts, so it helps to choose one that looks clean to your eye.

Do any shapes need extra protection?

Pointed shapes like pear, marquise, princess and heart have corners or tips that sit more safely in a protective setting, such as a prong or a V-tip.

Is a round or oval better?

Neither is better. Round is the most classic and brilliant, while oval looks larger for its weight and elongates the finger. It comes down to taste.

Finding Your Shape at Candor

The surest way to choose a shape is to see a few side by side, because a shape that looks great in a photo can feel different in person and on your hand.

Candor cuts and polishes its diamonds in-house across every popular shape, so you can compare them directly. When you are ready, see your shape with a Candor gemologist and find the outline that feels like yours.