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What isDiamondCut?

Diamond cut is an important factor when buying a diamond as it refers to how well the diamond sparkles. Here at Aspire Diamonds, we only sell high quality cut diamonds. The reason being the lower grade the diamond is, the less the diamond would sparkle - and it would also appear less round.

Diamond cut grades were developed by the GIA (Gemological Institute of America) during the 1940's and 1950's to enable independent labs to not only evaluate clarity and colour, but to check the structure of the diamond itself. A round brilliant cut diamond will have 57 or 58 facets which are precisely cut and defined. While these are miniature in size, they are extremely important as they govern how well the diamond is going to sparkle.

As well as round brilliant cut, there are also various different diamond cuts to choose from – including princess cut, oval cut and pear cut. For more, browse our range of stunning diamond rings now.

Diamond Cut Grades


The excellent cut is one of the most valued and cherished cut grades. This cut reflects almost all the light that enters the diamond. In some cases, such a large amount of light is reflected from an excellent cut that it can be upgraded to the rarer 'Ideal Cut'.

Very Good

A very good cut will not reflect as much light back as an excellent cut, however, this diamond grade will only loose a small percentage of light giving your stone a fantastic fire. These stones are a fantastic purchase and prove to be stunning value.


Good cut diamonds reflect most of the light that passes through them. Around 20% is lost - but these stones are brilliantly priced, and are substantially cheaper than a very good or excellent cut.


A large proportion of light is not reflected back from these stones, as they are often cut to unusual dimensions, causing them to have issues with dark tables.


Most of the light will not be reflected back out of the diamond. These stones are usually too deep or shallow to be able to reflect the light back out.

GIA Diamond Grade

Now you know what a diamond cut is, the different diamond cuts available and about the GIA diamond grade, browse our range of diamond engagement rings now at Aspire Diamonds. Alternatively, view our diamond jewellery in person at our Jewellery Quarter store.

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