THE FIVE C’S - Shiels Jewellers

The universal method for assessing the quality of any diamond is known as ‘The Four Cs’: Colour, Carat (weight), Clarity and Cut. However, Shiels offers a fifth ‘C’ – Confidence.


A diamond’s colour is one important factor in determining its value. Each diamond is graded using a scale created by one of the leading gemmological industry organisations. The nearer a diamond is to being absolutely colourless, the more valuable it will be. Most diamonds used in jewellery will appear to be white or colourless, but very few are totally colourless, the majority of stones possess some form of colour. Shiels was the first major Australian jeweller to release an Australian Diamond range, which includes Cognac and Champagne coloured diamonds – always high in demand due to their magnificent colour.



The size of a diamond can dramatically affect the value of the stone and the jewellery in which it is used. Generally, the larger the stone the greater the value. The weight of a diamond is measured in ‘carats’ (sometimes referred to as ‘ct’) and derived from an ancient measuring unit based on the weight of carob tree seeds. One carat is divided into 100 points. A diamond is usually priced on a per carat basis, according to its size and quality.


Natural diamonds are the result of carbon exposed to tremendous heat and pressure deep within the earth’s surface. This natural process can result in a variety of internal characteristics called 'inclusions' and external characteristics called 'blemishes.' Evaluating diamond clarity involves determining the number, size, nature, and position of these characteristics, as well as how these affect the overall appearance of the stone. While no diamond is perfectly pure – the closer it is, the higher its value. Note, most inclusions and blemishes cannot be easily seen without the help of a diamond loupe and professional experience. These inclusions are what make each diamond unique like a fingerprint.



Diamonds are renowned for their ability to scintillate light, which allows for intense sparkle. We often think of a diamond's cut as its shape (princess, brilliant round and cushion-cut), but a diamond's cut grading is really about how well a diamond's facets interact with light. Precise artistry and workmanship are required to craft a stone, so that its proportions, symmetry, and polish deliver the magnificent return of light only possible in a diamond. A well cut diamond makes a diamond sparkle more impressively, can disguise inclusions and ultimately make a diamond appear larger; it is the only aspect of a diamond that is not determined by nature. Perfect master cutting is no better demonstrated than in the

Flawless Cut Collection, exclusive to Shiels, where 8 symmetrical hearts and arrows can be seen! 

The 5th 'C' - Confidence

Confidence is the knowledge that you have bought amazing jewellery from Shiels – a family owned Australian jeweller that only selects the very best pieces for our customers. We have an extensive Certified Diamond collection that is independently certified, and we only stock ethically sourced, conflict-free diamonds crafted by the best diamond cutters in the world. At Shiels, you can be confident that we have sourced the very best product at the very best price so that you can treasure your jewellery piece for generations to come. Each member of our staff is expertly trained to help you find the best piece for any occasion however we also have more great diamond buying tips on our website