What is an international diamond grading certificate?
An international diamond certificate is an independent (often non-profit) diamond grading assessment of an individual diamond that is provided by an internationally industry approved diamond grading laboratory. The laboratory inspects the diamond up to three time by different individuals using the highest standard diamond grading equipment to test the diamond’s carat weight, colour, clarity and most importantly the cut quality of the diamond. A diamond grading certificate is what give a diamond its worth, without a certificate you are relying on only the opinion of the seller as the the grade and quality of the diamond. As most people purchasing a diamond do not have the skills or equipment to grade a diamond themselves the international diamond certificate provide this for them. In the current market almost all diamonds above 0.40ct have been certified and the certification number is often engraved into the girdle of the diamond for full security. if a diamond does not have a genuine international diamond certificate it really should not be purchased as it probably means that it is the lowest possible cut and the grading may not be accurate. The most common and probably the only certificates that you should accept in Australia are GIA, HRD, IGI, AGS, DCLA, ADGL and EGL.
Why is a diamond grading certification so important?
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Certification has existed for diamonds only since early 2000 and now plays a very important roll when selecting a diamond. The modern techniques for cutting a diamond are now so skilled that manufactures can easily cut a perfectly proportioned diamond but unfortunately not all diamond will be cut to perfect proportions. As a diamond’s cut is what give the stone its sparkle and ultimately its worth, the need to accurately grade this for client identification sparked the the importance of diamond grading certification.
Not all international certification is the same
Although most diamond will now be provided with an international diamond certificate it is also important to choose the right certification laboratory. There are several major international certification laboratories who operate in several counties and probably certify around 80% of all certified diamonds. However not all international certification is graded to the same set of industry standards. Each of the certification laboratories grade by their own set of scientific standards which requires the help of an industry expert when selecting the right diamond for yourself.
For 100% satisfaction any high end retail store should provide all of their diamonds with a reputable, leading independent diamond certifier such as GIA, HRD or AGS to ensure the client is getting exactly what they ordered. Diamond Brokers Queensland believe that for a diamond to be given the highest possible grading and the highest possible value only a GIA certified diamond is acceptable. If you wish to purchase a true ideal cut diamond that is perfectly cut in every way then GIA is the only selection. There are still other very good certifiers who grade to similar standards but just do not quite hold the same reputation as the GIA brand, HRD, IGI, DCLA and ADGL all grade to a similar standard but the top tier diamonds do not hold the same value as that of GIA.
One other commonly found certificate is the EGL certification which has a completely different set of grading standards and although will be better than a non certified diamond the grading standard of this laboratory is well below that of the above certifiers. Generally an “Excellent” grade EGL diamond is equivalent to a “Good” grade GIA and so is the price. Unless you are looking for a low value stone that sounds good on paper an EGL and any other non-recognised certifiers should be avoided at all costs.