Diamond Certificates

A diamond certificate is also known as a 

Diamond Grading Report. This report comes 

from the Gemological Institute of America 

(GIA), and you should require this report 

when you are purchasing a diamond.

With a diamond certificate, you can verify 

the color, cut, carat, weight, and clarity of the 

diamond. You don’t have to worry about a 

diamond dealer telling you anything less than 

the truth, because the certificate comes 

from the GIA – not the dealer. You may be 

required to pay for the certificate, but the 

cost is usually low, and in many cases, it 

will help you negotiate a better price on the 

diamond – or keep you from purchasing a 

lower quality diamond altogether.

If you buy a high quality diamond, and then 

later decide to sell the diamond, you will 

need to have the certificate, or you will have 

a hard time selling it to someone else. 

Furthermore, you can use the Diamond 

Grading Report to look up the wholesale 

value of the diamond in question. Use the 

guide that is used by the diamond cutting 

industry.

With the Certificate, or Diamond Grading 

Report, there won’t be any doubts when you 

are trying to purchase a diamond. You can 

easily find out what the diamond is worth. 

This will prevent you from overpaying, and it 

can prevent a seller from under-charging as 

well. 

A copy of the Diamond Grading Report 

should be given to your insurance company 

as well, when you insure the diamond. This 

provides absolute, unquestionable proof of 

the value of the diamond should it be stolen 

in the future. Insurance companies cannot 

argue with the report.

Avoid diamond dealers who seem reluctant

to provide a certificate! Also avoid sellers 

who tell you that a certificate diamond will 

cost you more – the only additional cost 

should be the cost of the certificate, which 

is low. If the dealer doesn’t want to provide 

a certificate, then you don’t want to do 

business with that dealer.

Don’t accept certificates from Gemological 

Laboratories other than GIA. There are many 

fly-by-night Gemological labs these days, but 

in the end, GIA has been established as the 

most respectable and trustworthy – not to 

mention oldest – of the lot. So avoid dealers 

who don’t want to use GIA for certification 

purposes as well.

Don’t buy an expensive diamond without 

paying the extra cost of the certificate. If a 

dealer tries to convince you to make the 

purchase without the certificate, or if they 

want to use a company other than GIA, you 

can be sure that the dealer has probably 

greatly inflated the price of the diamond – 

they have something that they are hiding 

from you.