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What Size Carat is Best for a Diamond Engagement Ring?

12th February 2021

by Kundan Challa

diamond ring

If you're planning to take your relationship to the next level, it may be time to consider an engagement ring. When you're planning the perfect proposal, there is a lot to consider, such as how much you should pay for an engagement ring and how to choose the perfect engagement ring. After some research, you may realise that diamond carat has an impact on price. So, what size carat is best for a diamond engagement ring? We reveal all in this article. 

What does carat mean?

Diamond carat means or refers to the weight of a diamond rather than its size. Of course, a diamond's weight does impact the size and how it appears to the observer. What is interesting is that two diamonds of a similar carat weight can appear a different size. For example, a diamond with an Ideal cut will be perfectly proportionate and the ideal size for its weight. A diamond cut poorly may be too deep or too shallow, which affects the amount of sparkle produced. 

Does diamond size matter?

It may be easy to assume that bigger is better when it comes to diamond size. If you intend to buy the largest diamond for your budget, that is down to you and a personal preference. Most diamond experts would advise that bigger isn’t always better for diamonds in engagement rings. It is equally important to buy a good quality diamond with a good cut, clarity and colour grading. After all, a smaller diamond that sparkles beautifully is just as impressive as a large diamond.

How many carats should an engagement ring be?

diamond carat size on hand

In the UK, a 0.6-carat engagement ring seems to be the average carat size. However, the engagement ring you choose should be as many carats as you want. In the end, an engagement ring is a piece of jewellery designed to be worn and cherished forever, so it must look and feel as special as possible.

What do different diamond sizes look like?

Every diamond is unique, and even two diamonds of a similar carat weight can look different. A diamond's shape impacts how big or small it appears, so it is something to keep in mind if you are looking for an engagement ring. For example, a round cut diamond and oval cut diamond of the same carat weight will look different as the weight is distributed differently depending on the shape. 

How does diamond carat affect the price?

diamond carat

Diamond carat massively impacts its price. Typically speaking - the bigger the carat, the more expensive the diamond. If you have a limited budget but looking for the largest diamond possible, you would need to sacrifice diamond quality. We wouldn't recommend this, however, as the diamond quality is equally as important as size. 

If the diamond size is really that important to you, we recommend choosing the highest carat for your budget along with the best cut grade. A good cut will help the diamond sparkle and can mask small amounts of colour or inclusions.

Average carat for a diamond engagement ring

As we mentioned before, the average carat size for an engagement ring in the UK is around 0.6ct. Typically the average carat for a diamond engagement ring is anywhere from 0.5 carats to 1 carat. The price of a diamond ring somewhere between these sizes can vary dramatically according to the specifications you select.

To learn more about diamonds head to our diamond education guide, or contact us with any questions you may have before buying a diamond engagement ring.

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