The 4 C’s of Diamonds

The "Four C's" of diamonds are the four key factors that determine a diamond's quality and value. These factors are: Cut, Carat weight,  Colour, and Clarity. Understanding these characteristics is essential when evaluating and purchasing diamonds. In this document, we will provide an in-depth explanation of each of the Four C's.


1. Cut:

The cut of a diamond is perhaps the most critical of the Four C's, as it directly influences the diamond's sparkle and brilliance. The cut refers to the diamond's proportions, symmetry, and the quality of its facets. A well-cut diamond will reflect and refract light in a way that maximises its brilliance and fire. A poorly cut diamond may appear dull and lifeless.

2. Carat Weight:

Carat weight refers to the size of a diamond and is often one of the first characteristics people notice. The larger the diamond, the rarer and more valuable it is. However, it's important to note that carat weight is not the only factor that determines a diamond's worth; other factors also play a crucial role in its overall quality.

3. Colour:

Diamond colour refers to the presence or absence of colour within the stone. Most diamonds appear colourless or near colourless, but some may exhibit faint shades of yellow or brown. Diamonds in the D to F range are considered "colourless" and are highly prized for their purity. As you move down the scale towards Z, the diamond's colour becomes more pronounced, and it can significantly affect the diamond's value.

4. Clarity:

Clarity assesses the presence of internal or external imperfections, known as inclusions and blemishes, often referred to as "diamond flaws." Clarity is graded on a scale that ranges from "Flawless" (no imperfections visible under 10x magnification) to "Included" (imperfections visible to the naked eye). The fewer and less noticeable the flaws, the higher the clarity grade and the more valuable the diamond.

It's important to note that many inclusions are microscopic and do not affect the diamond's overall beauty or durability. However, the clarity grade can significantly impact the diamond's price.

How to Use the Four C's:

When buying a diamond, it's essential to consider all four C's in combination. For example, a larger carat weight may be less valuable if the diamond has a lower cut grade, poor colour, and low clarity. Conversely, a smaller carat weight can appear more stunning and valuable if it has an excellent cut, colour, and clarity.

Ultimately, the best diamond for you will depend on your personal preferences and budget. It's advisable to prioritise the characteristics that matter most to you and consult with a reputable jeweller who can help you find a diamond that meets your criteria while staying within your budget.

Understanding the Four C's of diamonds empowers you to make an informed decision when purchasing this precious gemstone, ensuring that you get the most value and beauty for your investment.