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Diamond Grading Service 

At Argyle Jewellers, we not only create stunning, timeless pieces of jewellery, but we have worked closely with highly regarded diamond suppliers – including the Australian mines in Western Australia – to source extremely rare and valuable loose diamonds. With decades of practice to our name, we know an exceptional diamond when we see one – which is why we are proud to offer professional diamond grading services, to help you better understand and put value behind your special pieces.

The Diamond Grading Process

The Australian diamond industry adheres to internationally recognised standards laid out by institutions such as the International Diamond Council (IDC), the World Jewellery Confederation (CIBJO), and the Gemological Institute of America (GIA). These standards define a four-step approach to diamond grading, known as the “4Cs”.

Carat Weight

Measured in carats, this refers to the diamond’s physical weight, directly impacting its size and price.


This encompasses the proportions, symmetry, and polish of the diamond, significantly influencing its brilliance and fire.


Graded on a scale from flawless to heavily included, this assesses the presence of internal blemishes or imperfections.


Diamonds range from colourless (D) to light yellow (Z), with whiter diamonds typically commanding higher prices. Fancy coloured diamonds, such as pink, yellow and chocolate diamonds, are graded differently however. According to the GIA, coloured diamonds are graded in order of increasing colour strength, from Faint, Very Light, Light, Fancy Light and Fancy to Fancy Intense, Fancy Vivid, Fancy Dark and Fancy Deep. Fancy Intense and Fancy Vivid generally carry higher prices.

Argyle Jewellers proudly holds an internationally recognised diamond grading licence, ensuring every evaluation adheres to the strictest industry standards. Our team of highly qualified and experienced jewellers possesses the expertise and specialised equipment to assess each diamond meticulously, considering every subtle nuance influencing its value.

Why Choose Argyle Jewellers For Diamond Grading?

Having been in the business of diamonds for many years, Argyle Jewellers can offer you some of the best diamond grading services in Brisbane, which allows you in turn to place an inherent value on your diamonds.

Unmatched Expertise

Our team of jewellers boasts extensive experience and ongoing training, allowing them to identify even the subtlest nuances affecting a diamond’s grade and eventual value.

Transparency And Trust

Argyle Jewellers values integrity above all else. You’ll receive a detailed and transparent grading report, outlining each “C” factor and its impact on the diamond’s overall value.

Outstanding Service

Whether you have a single loose diamond or a dazzling piece of diamond jewellery, Argyle Jewellers caters to your individual needs with personalised attention and support.

Understanding your diamond’s true worth starts with a professional and accurate grading. Visit Argyle Jewellers today and experience the difference.


Trusted Jewellery Boutique For Over 30 Years

As a family owned jeweller since 1987, Argyle Jewellers offers exceptional service, craftsmanship, and materials.

The process of creating an engagement ring is a special time for couples. At Argyle Jewellers, we value the intimacy of working with you to craft your perfect piece of jewellery. Our ruby rings are crafted with love and care, and our team ensures a high level of attention to detail throughout the process. Our high-quality rubies are set in gold or silver, and we offer a wide variety of cuts and shapes to suit every customer.

Our team is always happy to talk you through your options when it comes to engagement jewellery. You are welcome to contact us via phone on 07 3156 5980 or email at sales@argylejewellers.com.au.

Our in-store boutiques are located at Westfield Garden City and Westfield Carindale. Visit us today and our friendly team can assist you with finding the ruby engagement ring of your dreams!