johnsons jewellers

johnsons jewellers

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Our Guide To Buying Diamonds

At Johnsons Jewellers, we want to ensure that buying a diamond ring is a truly wonderful experience. With more than 125 years of providing specialist assistance, we can help you find the perfect diamond in a luxury buying experience.

We’ve put together our guide to buying diamonds to help you navigate the jargon, covering every important aspect of diamond quality, cut and size. Find out more about why each ‘C’ matters and understand how certification works to choose the right diamond for you.


Diamond Cut

One of the most striking qualities that a diamond has is its sparkle, and it’s often the first thing people notice. A beautiful sparkling ring that returns light and glimmers in just the right way can really set a piece of jewellery apart from all others. In this guide you’ll find everything you need to know about choosing the best value and most elegant diamond cut, to achieve brilliant sparkle within your budget.


Diamond Colour

The natural tint of white diamonds is commonly referred to as ‘colour’. Whilst most white diamonds typically have a slight tint of yellow, pure diamonds have no colour at all. Colour is measured on a scale that ranges from ‘colourless’ at one end to ‘light yellow’ at the other. In this handy guide, we share our top tips for understanding diamond colour, how to identify colour in diamonds and advice on picking the colour that’s right for you – so you can feel confident that you’ve selected the perfect gem.


Diamond Clarity

To highlight the number and size of impurities diamonds have, a clarity scale is often used. A certified diamond grader will inspect the diamond under 10x magnification and will attribute known impurity categories to the stone, depending on its condition. The following scale is used by GIA, and is considered an industry standard for assessing the clarity of diamonds:


F (Flawless)

IF (Internally Flawless)

VVS (Very Very Slightly Included)

VS (Very Slightly Included)

SI (Slightly Included)


Diamond Carat

The term ‘carat’ is one you may be familiar with; a high carat diamond ring is often associated with opulence, luxury and extravagance. But what does this term actually mean? How important is the carat value of your diamond? And how do you know what carat value to choose?

These are just some of the questions we answer in our complete guide to diamond carat weight.


Diamond Certification

When purchasing diamond jewellery, it’s important to be able to fully understand exactly what you are buying. Ensuring a diamond is certified by an independent and recognised laboratory is essential for an unbiased assessment of a stone’s quality which ultimately lends value and authenticity to your piece of jewellery. Learn the components that make up a diamond certificate and why they can be used to help you buy the perfect diamond.






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