Specialising in a wide range of Diamond Jewellery including custom designs.

The 4 C's of Diamonds

Diamonds are not all equal. In fact, there are significant differences in quality and ultimately, price. To understand a diamond’s value you must evaluate the diamond under the internationally recognised standards of the Diamond 4C’s: Cut, Clarity, Colour and Carat Weight.


This does not refer to the overall shape of the diamond but rather the quality of the cutting. It is the single most important aspect of any diamond. The proportion, finish and symmetry of the external facets of the diamond are what creates the fire and brilliance. A diamond may be colourless and flawless but if it is not cut well it will appear dull and lifeless.


A diamond’s colour is determined on a colour scale from D (colourless) to Z (yellow/brown). The most sought after diamonds have no colour. Whilst most diamonds appear to have no colour, in actual fact they have tints of colour as shown on the colour scale.


Refers to the amount and size of natural imperfections in the diamond. This may be internal (inclusions) or external (blemishes). The fewer inclusions in a diamond, the rarer and more valuable the gem.

Carat Weight

A diamond’s weight is measured in carats, abbreviated ct. One carat can be divided into 100 points. Therefore, a diamond weighing one quarter of a carat can also be referred to as being 25 points.