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The CARAT WEIGHT of your Diamond

The CARAT WEIGHT of your Diamond - Monroe Yorke Diamonds

Our recent posts have covered the 4Cs - the grading standard that diamond grading laboratories such as GIA, AGS and HRD use when examining and grading diamonds. As a reminder - when purchasing a diamond from Monroe Yorke Diamonds you will receive a diamond grading certificate such as the one shown below:

GIA Certificate of a Diamond from Monroe Yorke Diamonds


The certificate covers the 4Cs of diamond grading as we have explained, but will also give you unique information about your diamond.

We have talked about COLOUR, CUT and CLARITY.  This post is about the last of the 4Cs - CARAT WEIGHT. A carat is the unit of measurement specifically used to determine and describe the weight of a diamond or other precious stone.  The word 'carat' originates from the carob seed, a seed with a uniformity of weight that diamond traders in the past used to use as a counterbalance when weighing gems. A single carat is the equivalent of 0.2 grams, and divided into 100 points.

A diamond grading report will measure the weight of a diamond to the nearest 100th of a carat e.g. a 1 carat diamond has 100 points where as a quarter carat stone has 25 points.  In pre-set jewellery diamond weight is divided into fractions and will be graded with their decimal equivalent.  Below is a carat weight grading chart:

Round diamond size chart. Round diamond millimetre sizes

Round diamond size chart. Round diamond millimetre sizes


Many people think that the weight of the diamond is the 'C' that determines value.  This is not so.  If a diamond is of very high quality i.e. the colour, clarity and finish is exemplary then it will be worth more per carat weight.  All of these factors must be taken into consideration, and an experienced diamond retailer such as Monroe Yorke Diamonds, one of Australia's foremost diamond retailers, will guide you to your perfect diamond.