Engagement Ring Diamond Quality Chart | Rock C Jewellers

  • Shamballa Sterling Silver 925 swarovski crystal earrings
  • RockC jewellers outstanding score of 100% - Best Independent Retailer
  •    Quality Murano Glass Beads 925 Silver Pandora compatible
  • Shamballa Bracelets of the highest Quality at Discount prices
Member of the British Jewellers' Association
£0.00 TOTAL


At RockC Jewellery we understand that before you start shopping around for that perfect diamond you need to have an understanding of what you are buying. We have put together this simple guide to assist you when choosing that special diamond purchase. There are four main criteria to consider when buying your diamond these are cut, colour, clarity, and carat weight also referred to as the 4C's - This will enable you to select your diamond based on the same criteria jewellers use to grade them. for your diamond engament ring

With diamonds, its all about the four Cs cut, colour, clarity and carat weight.


A dress is nothing if its not cut properly, and the same is true of diamonds. Weeks, or months, of painstaking work go into cutting and polishing them so that they catch the light just so. In fact, the way a diamond is cut determines its brilliance, dimensions and finish. The better its cut, the better it handles light, giving it more sparkle and brilliance. Just like with our wardrobe, the colors of diamonds are all important. They come in an amazing array of often rare and very valuable colors, from yellows, blues, through pinks and greens. Naturally-colored diamonds are much sought after and they don't come cheap, either.But the rarest, and of course most highly-prized of all, is the totally colorless.

Jewellers use the alphabet to grade diamonds, starting with D for that elusive colorless diamond, and moving through the alphabet the more visible the colour.


 Flawlessness: The complete and utter pinnacle of perfection, inside and out; a rare quality in anything but especially in diamonds. This is how we judge diamond clarity. Does it have any identifying characteristics on the outside (fittingly called a blemish) or on the inside (an inclusion)? The vast majority of diamonds contain minuscule inclusions. They wont affect the beauty or durability of the diamond but the fewer and smaller the inclusions, the greater the sparkle. After flawlessness, there is a scale of inclusions that can help you judge the diamond claity and worth


Very Small Inclusions Grades 1-2 (VVS1, VVS2) are internal flaws that are only visible under 10x magnification. These are also very rare.

Very Small Inclusions Grades 1-2 (VS1, VS2) have inclusions which are not visible to the naked eye which means they are very high quality.

Small Inclusions Grade 1-2 (SI1, SI2) diamonds have small inclusions that may be visible to the naked eye but represent excellent value.


Something as special as a gemstone deserves its own system of measurement. Originally, they were measured with carob seeds, and this may be where the word comes from.

Carat weight is an easy way to compare diamond sizes, no matter what the cut. One carat is 0.2 grams and less than five per cent of diamonds weigh more than a carat (in other words, only a few ladies will be carrying anything heavier than 0.2 grams on their finger). Most diamonds are weighed in hundredths of a carat, or So, 25 points is a quarter of a carat, or 0.25 carats.


Some diamonds carry a certification that includes an analysis of their dimensions, clarity, colour, polish, symmetry and other characteristics. The certificates serve as proof that they have undergone an unbiased, professional examination, and that they can be traced back to suppliers who comply with the UN-mandated Kimberley Process. Daily care of your diamonds Diamonds may be the hardest substance known to man, but they can still get scratched and damage. Here are some tips on how you can make your diamond really sparkle: Avoid contact with chlorine bleach, which can pit or discolor the mounting.

Avoid wearing your diamond while doing heavy work diamonds are hard, but can still be chipped by a hard blow against the grain. Diamonds can scratch each other, as well as other stones and metals, so keep them separate from your other jewellery to avoid damage. To clean your diamonds, brush them gently with a clean toothbrush in a bowl, of warm, liquid detergent suds. Then rinse through a wire strainer before patting dry with a soft, lint-free cloth

[ X ] EU Cookie Compliance:This website uses cookies for essential functionality, your convenience, and to help us improve the site using Google Analytics.Accept cookies & hide this message.

Cookies are small text files that can be placed on your computer by websites you visit, which are used widely to make websites work properly or more efficiently, as well as to provide information to the owners of the site, and/or their service providers.

Most browser software will allow you to turn off cookies, but you should note that doing so may cause some website functionality to stop working.
Check your browser's help or privacy settings if you want to turn cookies off.

The cookies used on this site include the following:

Cookies for Website Traffic Monitoring and Improvements 1. Google Analytics creates 4 cookies, __utma,__utmb,__utmc and __utmz.
We use Google Analytics to monitor our website's performance, and how visitors use it so we can make improvements to the user experience. If we use Google Adwords or Google A/B testing, these may also utilise a cookie for the same purposes as Analytics.

Cookies for User Convenience 2. We use a simple cookie to help remember login details for our site's admin panel and also for our Blog admin panel. These are for user convenience only, and no information is collected or shared with anyone.

Essential Cookies for Website Functionality 3. PHPSESSION. This is an essential cookie that assigns a session to each visit to ensure the site's functionality works properly, that only lasts while you are on this site. No information is retained or shared with anyone.
4. regID. An essential cookie which helps the website remember you after you have logged in, allowing you to utilise specific website functionality for logged in users only. No information is retained or shared with anyone.

Find out more about cookies