Certified Diamond Dealers - Carters Jewellers



If you would like to find out more about how diamonds are graded, classified and valuated, the best place to start is with the 4 Cs. Whether you simply want to expand your knowledge or you are interested in buying a diamond, learning the basics is essential.

    • Cut

The way the diamond is cut and polished has a great effect on how much sparkle it will emit. The symmetry, proportioning and polishing is an important aspect in determining the brilliance of the diamond.

    • Colour

Although most stones appear colourless, many actually have pale yellow tones. The grading system for diamond colour goes from ‘D’ to ‘Z’ – the closer a stone is to colourless the more valuable. With ideal, colourless stones as ‘D’ and stones with noticeable colour going down the scale and in value depending on how strong the colour is.

    • Clarity

Clarity refers to imperfections, or inclusions, in the diamond. The placement of a stone within the diamond clarity scale is dependent on the number, type and placement of the inclusions.

    • Carat

The size of the stone has an effect on what type of jewellery it is used for as well as how expensive it is. There are of course other factors that can determine the value of a stone and these include the colour and clarity

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