Buying a diamond can be a daunting task, especially if you know very little about what goes into how diamonds are priced and how they are set in different kinds of jewellery.

As a rule of thumb, the best place to start when looking to buy a diamond is its certification; you need to know if the diamond you’re interested in buying is certified or not.

Examining the diamond’s certification is important, because a diamond certificate is a thorough, complete and unbiased report that declares that the diamond that you are buying is authentic.

It is the best way to guarantee that the diamond that you purchase with your hard earned money is not synthetic, artificial, or of lesser quality to what you intend to purchase.

What does a diamond certificate look like? Your diamond’s certificate will contain a complete description of the diamond including: a unique ID number, carat weight, colour grade, clarity grade, cut, measurements, proportion grade, transparency grade, polish grade, symmetry grade, fluorescence, hue and any other characteristics that determine the diamond’s quality.

The most important characteristics to look out for are: Carat, colour, clarity, and cut, along with the confidence that comes with buying the diamond from a reputable seller who offers an independent grading report on the diamond. 


The fundamental mission of the DCLA is to protect consumers, and consumer confidence, when buying diamonds.An essential element of this confidence is providing accuracy and transparency in diamond grading.

DCLA strives to be a pillar of integrity, ethics, professionalism, and knowledge. DCLA remains the only laboratory not to certificate treated or laboratory grown diamonds.


GIA's mission is to ensure the public trust in gems and jewelry by upholding the highest standards of integrity, academics, science, and professionalism through education, research, laboratory services, and instrument development.


HRD Antwerp is dedicated to serving diamond professionals by offering products and services that benefit the diamond industry and trade.
We continuously promote the unique properties and values of a diamond as a symbol of eternal love and affection.
Through innovation, consistency and open communication we strive to generate the highest added value for our customers and to safeguard trust in the diamond world.
We are committed to performing our duties with the utmost integrity towards our customers, employees and other stakeholders around the globe.
Our baseline 'The Blueprint for Quality' reflects what we stand for. It expresses our confidence in the prosperity of the diamond industry.


Total commitment to understanding consumer concerns has motivated IGI to develop comprehensive analysis and clear documentation for consumers. This empowers jewelry buyers to focus on finding precisely what they want, with full assurance in the integrity and quality of the IGI certification.

The DCLA Diamond Certificate

The GIA Diamond Report

The HRD Diamond Certificate

The IGI Diamond Certificate

The Diamond Certification Laboratory of Australia (DCLA) is the only recognised and internationally affiliated, as well as locally accredited diamond grading laboratory in Australia. Every DCLA certified diamond is carefully scrutinised and examined by our expert team. The certificate describes the diamond in intricate detail and lists all the characteristics that determine its quality. To keep counterfeits at bay, the certificate has various security features including holograms, a UV activated text seal covering the information field, special UV activated paper, and an embossed foiled crest. Simply put, the DCLA Diamond Certificate is the most important document your diamond will ever be linked to. It does not date or expire and forms a steady foundation for experts to calculate your diamond’s worth. Our advanced equipment, accurate reference materials and grading rules, and procedures set out by the International Diamond Council (IDC) and the World Jewellery Confederation (CIBJO) ensure that we meet our objective of increasing consumer confidence in the purchasing of diamonds.

Important information from Rappaport

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Selling a Diamond DCLA Services