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Most people have heard of The Four C's when it comes to diamonds. The C's refer to Cut, Colour, Clarity and Carat. There is a fifth C that can be just as important when choosing a diamond and it stands for 'Certificate'.

A diamond report is commonly known as a 'Certificate'. In a perfect world the report should detail all the important aspect, characteristics and quality grades of a diamond. The report will be accurate, unbiased and produced by expertly trained gemologists. The report would be a useful tool for diamond professionals and consumers. 

We don't live in a perfect world. 


Most diamond reports are inaccurate, biased, exaggerate diamond quality grades, produced by poorly trained people, do not help diamond professionals and mislead consumers. 

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The most trusted diamond grading organisation is the GIA (Gemological Institute of America). Other organisations producing diamond reports include IGI, HRD, EGL, AGS and many other three acronym organisations. 

Just because a diamond has a report does not mean the diamond is a good quality diamond. This is why the word 'Certificate' is misleading. A certificate alludes to something being special or superior, it gives the impression something is deserving of a special piece of paper. 

If a diamond report, or certificate is important to you, choose a report which accurately reflects the diamond. Choose a GIA Report. An inaccurate diamond report is simply a waste of good paper.