The world’s most popular gemstone, a diamond’s cut and shape is crucial to the final look of the stone, and the piece of jewellery it will be added to. But contrary to popular belief, a diamond’s cut isn’t the same as its shape.

What is a diamond cut?

A diamond’s cut is a very technical and difficult process, where the aim is to get the diamond’s facets to interact with light in a certain way. An immense amount of craftsmanship goes into this process in order to fashion the stone so its proportions, symmetry and polish deliver the best return of light possible. As part of the 4Cs, a stone’s cut is measured by how it delivers the desired effect in three key areas;

Brightness; how white light is reflected inside and outside a diamond

Fire: The scattering of white light

Scintillation: The amount of sparkle produced

A diamond is then rated on these three factors and the results are recorded on a scale from poor to excellent. The craftsmanship of the diamond will also play a major part in determining the diamond’s place on the scale, as factors such as durability and depth come into play. Therefore, when looking for the perfect diamond, ensure that it has a good quality rating between very good and excellent to ensure that the diamond will last, and also provide the best aesthetic throughout its life.

What is a diamond shape?

Different to cut, a diamond’s shape is the final shape or silhouette it is presented as. There are many different types of diamond shape to consider when making a purchase, from a contemporary square to a vintage pear shape. The key thing to look for a diamond is symmetry and the quality of the shape. The diamond needs to be shaped in a way where it will be durable and practical to wear, as well as being comfortable, especially if wearing as an engagement ring.


round diamond shape

A popular shape, the round diamond is a classic seen in many earrings and ring designs. A brilliant choice for a solitaire engagement ring, nearly all round diamonds offer a very good light refraction, ensuring that extra sparkle.


square diamond shape

A contemporary design, the square cut almost looks larger than the round design. Ensure that you choose a square shape where the sides are completely even.


octagon diamond shape

Typically featured with an emerald cut, the octagonal diamond is often seen with flat and wide edges to create a mirrored effect. Inclusions are often easy to see here, so ensure that the diamond has an excellent rating.


heart diamond shape

A feminine design, the heart shaped diamond is a symbol of love. The heart shaped diamond isn’t seen as often as you would think, making it the perfect choice for those who enjoy unique pieces.


pear diamond shape

Offering a tapered point at one end, this shape can help extenuate the finger making the hand look more elegant. Look for symmetry in this design.


triangle diamond shape


Quite a rare shape, the triangle needs to have a high clarity to ensure that it promotes the desired effect. A unique choice for any jewellery piece, each side of the triangle needs to be in proportion and also secured with a claw fitting to protect the edges.

If there is a particular cut or shape of diamond that you are looking for, please contact us, and we will be more than happy to assist.

For our full range of diamond jewellery please click here. 


Post By Lauren Smith