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The weight of a diamond is expressed in carats, this is the weight of measure that the jewellery industry uses to weigh diamonds. The word carat originated from the carob tree. The tiny seeds of this tree are well known for their uniformity and consistent weight. Traditionally diamonds and gemstones were weighed against these seeds until the system was standardized, and one carat was fixed at 0.2 grams.
One carat is divided into 100 points. A diamond weighing one quarter of a carat can also be described as weighing 25 points or 0.25 carats. Points are generally not used to describe weights over one carat.
The chart below outlines various diamond weight sizes and the corresponding millimetre size.
The dimensions of the diamond should tell you how large the diamond will appear.
The chart not scale and schould only be used as reference.
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| .05 | .10 | .15 | .20 | .25 | 0.50 | 0.75 | 1.00 | 1.50 | 1.75 | 2.00 | 2.50 | 3.00 | 4.00 | 5.00 | 7.00 |
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Carat is often confused with size of a diamond even thought it is actually a measure of weight, a diamond's size is measured by fractions of millimetres. |
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Do not be mistaken by the belief that the larger the carat weight, the more valuable the diamond. While this can be true, it is not necessarily so. Keep in mind that a diamond’s colour, clarity and cut are major factors that influence the value of a diamond. For that reason, it is important for every potential diamond buyer to understand the importance of each of these characteristics and the impact it can have on the value of a diamond, when considering the purchase of a diamond. These characteristics are more commonly known as the 4C’s - Cut, Colour, Clarity & Carat. |
