The Four C’s – Carat
A diamond is graded and defined by four key elements – cut, colour, clarity and carat weight. One of the easiest and most recognisable traits of a diamond is indeed the carat weight as it is the definitive indication of the actual size of the stone. While the other “C’s” are important and do determine the value of the diamond to a certain extent, the carat weight is the key factor that ultimately decides the price tag of this precious and rare stone.
Origins of the Weight System
Native to the Mediterranean region, the evergreen Carob tree and its seed known as a carat was the perfect comparative tool for weighing diamonds. As for the specific breakdown of a carat – A single carat is divided into 100 points and is equivalent to 200 milligrams in the metric system.
Why is Carat Weight so Important in Relation to Price?
There is a saying that “bigger is better” and this rings true for many reasons when it comes to diamonds. Firstly, while all diamonds are rare to a degree, the ones with a higher carat weight are even more so. This is probably why when many women become engaged, their friends will often ask about the size of the diamond, as it is a direct correlation to the value of the stone and therefore is seen “better”. It is true that diamond graders do take into account the clarity and colour of the diamond when valuing it, however the carat weight is still king.
The Total Carats
As previously mentioned, the size of one single diamond, high in carat weight is often perceived as impressive because of the price tag that would have been attached to it. However, the value of multiple diamonds totalling the same weight as that same single diamond would be far lower in value. In simple terms, this is because smaller diamonds are far easier to come by than larger ones, therefore tend to be less expensive.
Cut and Carat Weight
In many circumstances, diamond cutters will sacrifice an “ideal cut” because it will lower the actual carat weight. While you may have a heavier rock on your finger, the diamond’s brilliance and ability to disperse light will be affected. Therefore, it is always important to purchase a diamond based on, not only the weight and size, but also the cut, clarity and colour. After all, there’s not much point in buying a huge diamond if it doesn’t sparkle!
Simon Middleton is part of the Diamond Exchange team who provide advice on buying engagement rings, how to choose diamonds and diamond rings.
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