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Diamond Shapes — More Than Just Round

A diamond's shape changes far more than its outline.

It affects how the stone catches light, how large it appears, how it sits on the hand and ultimately the entire personality of a piece.

And one useful distinction before we begin:

Shape and cut are not the same thing.

"Round" describes a shape. Cut quality describes how effectively a diamond's facets and proportions interact with light.

Diamond shapes overview — Round Brilliant, Oval, Pear, Emerald, Cushion, Princess, Marquise, Radiant and Asscher

Round Brilliant

The classic.

A round brilliant has 57 or 58 facets and is designed specifically to maximise its interaction with light.

It's brilliant, balanced and extraordinarily versatile — which is why it remains such an enduring choice.

Oval

An oval gives you much of the brilliance associated with a round stone, but with an elongated silhouette.

That length can make the stone appear larger for its weight and creates an elegant look on the finger.

No two ovals have quite the same personality. Some are broad and soft; others are longer and more slender.

Pear

Part round, part marquise, and completely distinctive.

A pear-shaped diamond combines a rounded end with a tapering point.

It can feel delicate and traditional or strikingly contemporary depending on its proportions and setting.

Emerald Cut

This is a very different kind of beauty.

Rather than the busy sparkle of a brilliant-style cut, an emerald cut uses long, stepped facets to create flashes of light and a distinctive hall-of-mirrors effect.

Its broad open table can also make internal characteristics easier to see, which means clarity often deserves particular consideration.

Marquise

Long, narrow and pointed at both ends, the marquise has one of the most recognisable diamond silhouettes.

Its elongated shape can create considerable visual spread for its carat weight.

It can be wonderfully dramatic in the right design.

Cushion

Soft corners. A square or slightly rectangular outline. Plenty of character.

Cushion cuts have existed in various forms for centuries and can range from antique-looking to distinctly modern depending on their facet pattern and proportions.

Princess

Usually square with sharp corners and brilliant-style faceting.

The princess cut gives a clean geometric silhouette without sacrificing plenty of sparkle.

It works particularly well in contemporary designs.

Asscher

Think geometry, symmetry and Art Deco.

The Asscher is a square step cut with cropped corners. Like an emerald cut, its appeal lies less in frantic sparkle and more in those mesmerising geometric flashes of light.

So which shape should you choose?

The one you keep looking at.

There are practical considerations — proportions, setting style, durability at pointed corners and how different shapes perform — but jewellery is personal.

Sometimes you'll know the moment you see it.

If you're torn between shapes, ask us. Seeing them side by side usually tells you far more than looking at photographs online.

Reference Note

Diamond shape and cut terminology informed by Gemological Institute of America (GIA) guidance.