The 4Cs

At Carl Christopher the Jewellers, Lytham we are here to help you select a beautiful and valuable piece of jewellery that you’ll love for years to come.

But remember, when it comes to jewellery, the four Cs are a crucial consideration. The 4 Cs represent four different attributes that are used to determine the quality and value of a piece of jewellery, particularly diamonds.

These 4 Cs are Cut, Colour, Clarity, and Carat Weight.

Let’s take a closer look at each of these four Cs and their importance in the world of jewellery.


The cut of a diamond is one of the most important factors that determine its beauty and brilliance. A diamond’s cut refers to the way it has been shaped and faceted, and the quality of the cut has a significant impact on how the diamond reflects light. A well-cut diamond will have a greater ability to reflect light, resulting in a sparkling appearance. In contrast, a poorly cut diamond may appear dull and lifeless. There are various types of diamond cuts, including round, princess, emerald, and cushion, among others. Each of these cuts has its own unique characteristics, and choosing the right cut will depend on your personal preference and style.

Diamond Cut Chart


Diamonds come in a range of colours, with the most valuable diamonds being completely colourless. The colour of a diamond is graded on a scale from D to Z, with D being completely colourless and Z being a yellow or brown tint. A diamond’s colour is important because it affects its brilliance and fire. The less colour a diamond has, the more light it will be able to reflect, making it more brilliant and valuable. However, some people prefer diamonds with a slight tint of colour, such as yellow or pink diamonds, which can add a unique touch to a piece of jewellery.


A diamond’s clarity refers to the presence of any blemishes or inclusions within the stone. These blemishes and inclusions can affect a diamond’s brilliance and overall appearance. Clarity is measured on a scale from Flawless (FL) to Included (I3), with Flawless diamonds being completely free of blemishes and inclusions and Included diamonds having noticeable blemishes and inclusions. The higher the clarity grade, the more valuable the diamond is likely to be. However, it’s important to remember that not all blemishes and inclusions are visible to the naked eye, so a diamond with a lower clarity grade may still appear beautiful and flawless.

Carat Weight

A diamond’s carat weight is a measure of its weight and size, with one carat equalling 0.2 grams. Carat weight is often the most visible and easily recognisable aspect of a diamond, and it can have a significant impact on the value of a piece of jewellery. Generally, the higher the carat weight of a diamond, the more valuable it is likely to be. However, carat weight is not the only factor that determines the value of a diamond, and it’s important to consider the other three Cs as well.

Overall, the 4 Cs are essential considerations when purchasing or valuing a piece of jewellery, particularly a diamond. A high-quality diamond will have an excellent cut, minimal colour, high clarity, and a desirable carat weight. However, it’s important to remember that personal preference and style should also play a role in the decision-making process.


By considering all four Cs and taking your personal preferences into account, you can select a beautiful and valuable piece of jewellery that you’ll love for years to come.