Australia's Premier Diamond Certification

Independent Gemmological Laboratory

Welcome to Independent Gemmological Laboratory

Are you worried about the value and origin of your diamond investment? You’ve come to the right place. Independent Gemmological Laboratory is here to help you make sure that you are getting the right value for your investment — whether you’re buying diamonds, gemstones, or jewellery.

In addition to our state-of-the-art diamond grading technology, Independent Gemmological Laboratory has years of experience and a long list of qualifications under its belt. We know that purchasing a diamond is one of your life’s biggest investments so we are here to offer you professional advice and the best diamond grading and certification capabilities in Australia.   

Welcome to Independent Gemmological Laboratory

How IGL can help

IGL offers Australia’s most respected diamond certification programs. With an IGL Diamond Certification, you can be confident that you are getting the exact diamond you paid for. Our IGL Diamond Certificate is your security and guide. With our stamp of approval, you can rest assured that your high-value investment is graded and certified according to strict and demanding standards. No matter where you purchased your diamond, we have the latest technology and the most experienced staff to accurately identify its value and origin.

We standardised our testing and grading process to make sure that each diamond that goes through our lab has been thoroughly tested. Our methods include:

Weighing

Weighing

We will weigh your diamond using a certified high-precision scale.

Measuring

Measuring

Using modern computer technology, we will measure and calculate the precise proportions and dimensions of your diamond.

Screening

Screening

Your diamond will be thoroughly screened against known treatments to make sure that it is natural.

Colour Grading

Colour Grading

With a set of registered master diamonds as a guide, our experts will grade the colour and fluorescence of your diamond under controlled environments.

Clarity Grading

Clarity Grading

Using state-of-the-art equipment, we will examine your diamond under the right magnification to assess its clarity.

Plotting and Identification

Plotting and Identification

Every diamond is unique. Each inclusion will be plotted and will be included in your IGL Diamond Certificate.

Cut Grading

Cut Grading

We will evaluate your diamond for polish, symmetry, and proportions.

Transparency Grading

Transparency Grading

Your diamond will be thoroughly examined to assess the quality of its crystal.

Transparency Grading

Coloured Diamond Grading

Specialising in Argyle DNA analysis with Australia's most advanced identification technology and Argyle colour grade matching with Australia's only certified pink and red diamond master set.

What makes IGL different

IGL takes pride in the quality of our work. Unlike many diamond certifiers, we do not sell diamonds nor are we affiliated with diamond manufactures. Do you know what this means? This means that we are completely independent and that we are not biased.  

We use the latest diamond laser proportion instruments in our grading and testing process. We follow a very meticulous process with strict and demanding parameter standards. 

Based on the results, your diamond investment will be identified as either one of the following:

IGL will not test and certify just any diamonds presented. To maintain the quality of our work, diamonds that don’t pass a certain standard will be rejected. This stringent vetting process ensures that we only produce IGL Diamond Certificates for stones that are natural and high-quality. 

Latest News