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PurelyDiamonds > Certifications


Every stone weighing at least 0.25ct (SI quality or better) is independently certified by either AnchorCert, GIA, IGI or HRD.
 

Many jewellers now sell diamonds with an AnchorCert Diamond Certificate, a completely independent organisation, with no vested interest in the product. AnchorCert is one of the world's leading diamond certification services and an AnchorCert Diamond Certificate provides you with complete confidence in your diamond.

You can see whether your item is certified by looking at your chosen product details under 'Certifications', where you will also see a logo for a Valuation Document.

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A diamond certificate means that all elements of the diamond you purchased have been examined and rigorously tested. Your certification report is recognised proof of "The Four Cs"--Cut, Clarity, Colour and Carat weight-- of your diamond/s. (For more information on "The Four Cs"click here.)

Your report will almost always come from one of two equally respected companies —AnchorCert or GIA. AnchorCert are a British company (part of the Birmingham Assay Office), GIA are an American company. Both are independent bodies which test, grade and certify your diamond through their specialist examination processes. We also use IGI and HRD certificates for some items

Stones weighing less than 0.25ct and/or P1 quality, will not be certfied but will be accompanied by a signed valuation document as confirmation of the quality of the diamond. This is standard practice throughout the industry, in fact, some companies don't certify stones under 0.33ct. The valuation document that you will receive if your stone is not certified, is your assurance that what you are purchasing is genuine and exactly as described on our website.



AnchorCert Certification


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The largest diamond certification service in the UK —a department of The Birmingham Assay Office (founded by an act of parliament in 1773), the largest UK Assay Office.

  • Confirmation of the carat weight, colour, clarity and cut of your selected diamond.

  • A team of highly qualified gemologists gives you expert opinion from qualified professionals.

  • Laser inscription of Report Number on the girdle of diamonds weighing 0.50ct or more.

  • High quality reports including a digital image of the diamond/s.

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GIA Diamond Certification

  • GIA have graded diamonds such as the famous Hope Diamond and the De Beers Millennium Star.

  • Created the famous 4 Cs of diamond value (clarity, cut, colour and carat weight)

  • Corporate Birthplace of the International Diamond Grading System, used by jewellery professionals around the world.

  • Laser inscription of the Certificate number onto the diamond.


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