The Five Cs Of Diamonds 9th April 2018 – Posted in: Jewellery news – Tags: , , , , , , ,

Well girls, it may be showery, BUT the weather’s warming up, we’ve seen a few glimpses of that big yellow thing in the sky (I think it’s called the sun?) and we’re starting to believe that Summer is just around the corner; yes, you got it, it’s April once again.

Yet whilst April may not be the best time of year for the weather, it is the best time of year for one thing, because – as all you ladies who’ll be celebrating (or mourning) a birthday this month will know – the birthstone for April is the diamond. Lucky you lot!

So today we’re going to take at the five Cs of diamonds; what are they and why do we care? Read on to find out more about your favourite sparkly gems!


The Five Cs of Diamonds

They’re gorgeous, they’re glittery and everyone knows they’re a girl’s best friend, but there’s a lot more to the diamond than you may think, and as buying a diamond might be one of the biggest investments you’ll ever make, it’s important to know your stuff before you buy. So, if you’re not already familiar with the ‘5 Cs’ of diamonds, then consider this your indispensable guide and get educated before you make any future diamond decisions!


  1. Carat

Arguably the most important factor when it comes to evaluating a diamond is how many carats it is, which is measured by its weight. One carat is defined as one fifth of a gram or 200 milligrams, approximately the weight of an old five pound note.

Diamonds and diamond clarity

It’s widely thought that the size of a diamond determines its worth – a big ol’ rock equals a big ol’ price tag! – but as explained in an article published by, entitled Diamond Basic 101: The Diamond 5Cs, this isn’t necessarily always the case, as a smaller carat diamond more skilfully cut by a seasoned professional, can often be much more beautiful and therefore much more valuable.


  1. Cut

One of the most noticeable characteristics of a diamond is the way it’s been cut, as this affects how the stone sparkles – and we all love a bit (or a LOT) of sparkle!

Diamonds, Five Cs of Diamonds, Diamond Clarity, Diamond Carat, Diamond Cut, D Diamond Collection, Diamond Collection, Guy’s Signature Collection


According to an article published by, if a stone is cut to the perfect depth at just the right angles, a large percentage of the light that enters the diamond will be reflected back into the viewer’s eyes, making it appear brighter and more dazzling. Nature does determine so much about a diamond, but a skilful cut can turn a rough diamond into a beautifully polished one.


  1. Colour

Another very important factor to consider when evaluating a diamond is its colour. According to an article published by the Diamond Certification Laboratory of Australia entitled The Five Cs, the colour difference from one diamond to another can be very subtle but is very important to its value.

A grading system of letters from D to Z is used to portray the colour of a diamond, with D being completely colourless and Z having a yellowish or brownish hue. So it looks like it’s time to ditch the colour in this instance girls, because the more colourless the diamond, the better quality it is thought to be.


  1. Clarity

Diamonds usually aren’t completely pure. According to Diamond Basic 101: The Diamonds 5Cs, diamonds often contain small flaws or ‘inclusions’ such as scratches, air bubbles or traces of other minerals.

Cut diamonds

Although most inclusions aren’t visible to the naked eye, the purest of diamonds are deemed to be the most valuable. So next time you’re on the lookout for a beautiful diamond, just remember – if it’s shining clear, it must be dear!


  1. Certification

Whenever we’re buying a new handbag (which is as often as possible) there are a few things we look for, such as the colour, the brand, the material – is it a clutch or a weekend holdall, for example?

Diamonds, Five Cs of Diamonds, Diamond Clarity, Diamond Carat, Diamond Cut, D Diamond Collection, Diamond Collection, Guy’s Signature Collection

Well the same goes for buying and selling diamonds, so that’s why the carat size, colour, clarity, cut, shape and measurements are all assessed by an independent and recognised grading laboratory and certified accordingly. This is actually a great thing, as it prevents dodgy dealers from selling us poor quality diamonds, so don’t take a diamond at face value alone and don’t be afraid to ask for its certification report either.


Look At Some Of Our Diamonds

Now I can’t tease you with all this talk of diamonds and not show you a couple of our very own gorgeous pieces can I?

We think you deserve a treat, so say hello to this gorgeous diamond and platinum solitaire pendant. This beautiful bespoke piece was handmade by Guy and is a timeless classic. From our D Diamond Collection, this piece features a design that accentuates the purity and quality of the specially selected GIA certified D colour graded diamond.

Diamonds, Five Cs of Diamonds, Diamond Clarity, Diamond Carat, Diamond Cut, D Diamond Collection, Diamond Collection, Guy’s Signature Collection

This particular beauty is a round brilliant cut diamond, which measures 4.13 – 4.15 x 2.54mm and weighs in at 0.26ct. With a clarity grade of VS2 and a cut grade, polish quality and symmetry rating of ‘excellent’, this sparkling gem is truly spectacular!

If you’re getting hitched, you’ll love this piece – a gorgeous diamond and platinum solitaire ring. This particular diamond ring weighs in at 0.50 carat and measures 5.11-5.13 x 3.07mm. The clarity grade of VS1 is stunningly enhanced through the brilliant cut, ‘excellent’ polish and ‘very good’ symmetry of this delightful stone, which also has a fluorescence grade of ‘none’.

Diamonds, Five Cs of Diamonds, Diamond Clarity, Diamond Carat, Diamond Cut, D Diamond Collection, Diamond Collection, Guy’s Signature Collection

So there you have it girls, the inside scoop on everything diamond; now before you go out and treat yourself to that glittery rock (it would obviously be rude not to!) you can remember the 5 Cs and make sure you bag yourself a quality investment diamond.


Contact Us

We know everything there is to know about diamonds and can give you all the help and advice you need, so please get in touch with us today and we’ll make sure you get the perfect diamond for you.

And if you’d like to know more about our jewellery, or would like Guy to design a beautiful bespoke piece just for you, then please don’t hesitate to drop me an email at, give us a call on 01772 379 956, or even pop into our Longton studio at 15 Church Row Chambers, Longton, Preston, PR4 5PN.