Your Guide to Diamond Shapes

When purchasing diamond jewellery, there are many things to consider. One of the key considerations is the shape of the diamond. From the traditionally popular round shapes to increasingly popular, trendy elongated shapes, there are a wide range of options to suit a variety of preferences and personality types. Below we take a look at some of the main shapes available.


For nearly a century, diamond cutters have studied light behaviour and used precise mathematical calculations to optimise the fire and brilliance in a round diamond. A round diamond typically has around 57 or 58 facets, which maximise the sparkle. Round diamonds balance cut, colour and clarity grades while still getting the fire and brilliance desired, making them the most valuable.


Introduced in 1980, princess diamonds are a contemporary shape in the form of a square with four distinct 90-degree corners. Princess diamonds have facets arranged for maximum sparkle in a similar manner to round diamonds. Princess diamonds can come in a variety of length-to-width ratios. Square ones are more valuable.


Like the round shape, oval diamonds possess similar fire and brilliance with stretched facets that create the illusion of a bigger size and maximise the look of its carat weight. People with smaller hands like the oval shape as it can lengthen the look of your fingers.


Radiant diamonds are a mix between round and princess diamonds. They can be rectangular or square with distinct trimmed corners. The radiant diamond shape is focused on creating more sparkle with more facets than a round stone and achieving a similar level of brilliance.


The cushion shape is a classic shape dating back to the 1800’s. They come in a square or rectangular shape with broad facets and rounded corners and sides. They were once the most popular diamond shapes and are seen in a lot of vintage diamond jewellery.

Emerald cut diamond engagement ring on a woman’s finger. 


Like ovals, the marquise diamonds have a stretched-out shape with two dramatic points on either end. This shape has one of the largest surface areas of any diamond shape, looking larger when compared to another diamond cut of equal carat weight.


Resembling a drop of crystallised water, pear diamonds have a rounded end and a tapered point on the other. Like marquises and ovals, pear shaped diamonds have an elongating effect when worn in a north-south orientation.


Associated with love and sentimentality, the heart shaped diamond is a modified brilliant cut and one of the most challenging shapes to cut, as it requires great skill and dexterity.


Emerald shaped diamonds are rectangular with beveled corners. The lower half of the diamond is made of successive parallel broad flat facets known as the step cut. It is an elegant cut and is excellent at complimenting coloured diamonds. However, they are not as fiery or brilliant as round diamonds.


Asscher diamonds are cut in a perfect square with cropped corners and a windmill or ‘X’ geometric pattern. These diamonds are similar to an emerald shape but often look like an octagon with higher crowns (the top half of a diamond) and smaller tables when compared to emerald diamonds.

Bespoke Diamond Jewellery With a Variety of Shapes

At Hope Diamonds, our experienced custom jewellers can create the perfect piece of jewellery for you using whichever shape diamond appeals to you the most. Explore our range or to discuss a bespoke piece, get a quote or for any other information, call us today on 1300 67 57 87 or contact us online.