choose a stone…

choose a setting…

choose a metal…

choose a finish…

…choose ring

21 Meeting House Lane
Brighton
East Sussex
BN1 1HB

01273 773 544

choose a stone…

choose a setting…

choose a metal…

choose a finish…

…choose ring

21 Meeting House Lane
Brighton East Sussex
BN1 1HB
1273 773 544

21 Meeting House Lane
Brighton
East Sussex
BN1 1HB

01273 773 544

Certificated diamonds

Certificated diamonds are diamonds that have been scientifically graded under laboratory conditions. If the laboratory is a reputable one this means that there is no doubt when it comes to the grade of the diamond (see my diamond grading page for more info on the grading system: https://www.ringjewellery.co.uk/guides/diamond-grading/).

So why go to all of the trouble of sourcing a certificated diamond? Well it’s simple… if your friendly (or not so friendly) local neighbourhood jeweller gives his or her opinion on a diamond’s quality they may be a little ‘generous’ in their conclusions. This is because they want you to buy the gem & telling you it’s a great quality might just sway you. Now I’m not saying everybody that sells non-certificated diamonds is dishonest but this practice is way more common than you might expect. If you buy a laboratory certificated diamond then you know the true grade & value of the diamond.

The most highly respected diamond lab in the wolrd is the GIA (gemological institute of America). Here’s their website: https://www.gia.edu/ The way the GIA grade diamonds goes far beyond the 4 C’s (carat, cut, colour & clarity). They look at a diamond in extreme detail as this sample GIA certificate shows:

GIA diamond grading certificate

A certificate like this shows how well a diamond has been cut & polished, how symmetrical it is & even shows a serial number that has been lazered on to the diamond to ensure that the paperwork matches the stone!

When I began working in the jewellery traded the only laboratory graded diamonds were very, very large ones! Now all that has changed & rightly so in my opinion. Although it’s still not economical to pay a lab grade a very small diamond, as soon as you are looking for a stone over 0.30ct then you should ask your jeweller for a certificated diamond. It will give you (&your insurance company!) great piece of mind & will be very informative when it comes to the details of your specific stone.

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