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EducationAs part of your diamond jewellery buying experience, it is important to understand how a diamond is graded in terms of its characteristics. An estate agent, for example, can't determine the price of a house without knowing its size, condition, location etc. This is also true for a diamond.
Fortunately, there is an internationally recognised system for diamond grading - called the "4Cs". These are: Furthermore, at DeJoria, we believe it is extremely important to consider 3 additional factors: Of the 'traditional' 4Cs, no one 'C' is more important than another in terms of beauty, and it is important to note that each of the 4Cs will not diminish in value over time unless damaged by an accident. Remember that buying a diamond is an investment, since it maintains its qualities and value forever. Before embarking on the diamond education process, you might find it useful to visit our Glossary of Terms. CUT The cut of the shape is most commonly referred to as the shape of the diamond itself. Most people think of a diamond as being round in shape - therefore, the brilliant round cut diamond is the most popular. However, 'fancy shaped' diamonds (ie all diamond shapes which are not round) have grown in popularity over the years such as princess cut diamonds (square), emerald cut diamonds (rectangular), marquise cut diamonds, oval cut diamonds and pear cut diamonds amongst others.
 relation to the depth of the diamond and the percentage of surface the table (the flat facet on the top part of the stone) has in relation to the width of the diamond. If these relationships are not optimal, the fire and brilliance of the diamond are affected, and undesirable visual effects may occur. It is, therefore, the nature and extent of these effects that combine to give the diamond its final grade. We ONLY deal in diamonds with 'Good', 'Very Good' or 'Excellent' proportions. We will NEVER deal in diamonds with 'Fair' proportions, as this simply detracts from the brilliance or 'sparkle' of the diamond. The diamond's measurements and proportions are always outlined on its accompanying grading certificate. Click here for more information.   There is a well known 'ideology' for the depth and table for brilliant round cut diamonds (Depth 58-63% and Table 53-60%), but guidelines also exist for fancy shaped diamonds, all of which are outlined below for your reference:       CARAT SIZE The word "carat" is taken from the carob seeds that people once used in ancient times to balance scales. This was standardised in 1907 - one carat became 0.2 grams. Furthermore, once carat is divided into 100 "points". Therefore, 25 points is ¼ carat, 50 points is ½ carat and so on. Diamonds are rare. The larger the diamond, the rarer it is - larger diamonds, therefore, have a greater value per carat. For that reason, the price of a diamond rises exponentially with its size. This is not always to say, however, that the larger the diamond the more valuable it is compared with a smaller stone. This is dependent upon other characteristics as well. The following table shows key carat weights relate to size in millimetres for various shaped diamonds.
COLOUR The most valuable diamonds are colourless. They allow most light to pass through the stone and create the most brilliance. However, very few diamonds are colourless, so most diamonds will have some yellow in them - the less yellow the better. The colour scale goes from D to Z (no diamond of colour A, B or C has ever been found), with D being the most white and Z being the most yellow. At DeJoria, our minimum quality threshold is colour J (slightly tinted yellow). For comparison purposes, the majority of diamonds in a high street jewellers shop are 'Commercial grade' quality which, if graded on this scale, would be approx colour K / L.  D - Exceptionally white E - Exceptionally white F - Rare White G - White H - White I - Slightly tinted white J - Slightly tinted white Any diamonds with a colour grade of less than J would fall below DeJoria's quality threshold. CLARITY The clearer the diamond, the greater its brilliance, and the greater its value. Most diamonds have blemishes, called 'inclusions' which are nature's birthmark of the stone. These can be tiny traces of carbon (black spots), air pockets (white spots) or other naturally occurring phenomena. Diamond clarity ranges from diamonds without any flaws (internally flawless) to those that have visible inclusions. At DeJoria, our minimum quality threshold is SI2 ("Slightly Included" - not visible with the naked eye). For comparison purposes, the majority of diamonds in a high street jewellers are 'Commercial grade' quality which, if graded on this scale, would be approx clarity I1 / I2.  IF - Flawless, or Internally Flawless VVS1 - Very, Very Slightly Included. Requires 60x magnification to see any inclusions VVS2 - Very, Very Slightly Included. Requires 60x magnification to see any inclusions VS1 - Very Slightly Included. Requires 30x magnification to see any inclusions VS2 - Very Slightly Included. Requires 30x magnification to see any inclusions SI1 - Slightly Included. Generally requires 10x magnification to see any inclusions. SI2 - Slightly Included. Generally requires 10x magnification to see any inclusions Any diamonds with a clarity grade of less than SI2 would fall below DeJoria's quality threshold. CERTIFICATION Whilst the acquisition of a diamond engagement ring or other piece of diamond jewellery is an important expression of love or accomplishment, it also represents a major investment in time, energy and money. You need and deserve to feel confident in the integrity of what you've acquired. There is no typical industry standard for diamond certification in the UK - and therefore, you'll find that the majority of diamond jewellery in a high street jewellers will be non-certified. At DeJoria, we believe it is vital that you buy certified diamonds for your peace of mind. At DeJoria, we use GIA, IGI, AGS and HRD certified diamonds. Click here for more information.
BRITISH JEWELLERS' ASSOCIATION
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0845 355 1164 OR EMAIL info@dejoria.co.uk
 
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Create Your Diamond Ring
Today, an illegal trade exists within the diamond industry whereby the profits generated by the mining of diamonds - predominantly in 3rd world countries - have been used to fund wars and terrorist activity. These are known as "conflict diamonds" or "blood diamonds". The Kimberley Process was established in 2000 between governments across the world in an attempt to eradicate this disgraceful activity, and DeJoria wholeheartedly supports this initiative for we believe that wherever you purchase your 
important purposes - Firstly, it provides our clients with complete piece of mind that the diamond jewellery they have purchased is indeed the genuine article. Secondly, loss or damage of a personal item is always distressing, but think how much worse it would be if you have no idea of the worth of the item you have lost and have no way of convincing your insurer of its value. Safeguard take digital photographs of the diamond jewellery, note any distinguishing features, take a full and accurate description and place a value upon the item for insurance purposes. All this information is permanently stored onto a national computer database providing our clients, the police and your insurer with conclusive proof of ownership. 
Single purchases in excess of £10,000 will be accompanied by a 'Jewellery Portfolio' as part of our package. This provides a comprehensive description and valuation of the diamond jewellery, high quality images of the item, and helpful information to explain diamond grading, hallmarking and jewellery care. All this is provided in a luxury leather presentation wallet.
The British Jewellers’ Association is the national trade association which promotes and protects the growth and prosperity of UK jewellery companies. We adhere and support the BJA's Code of Ethics, which are outlined on the 
