Aug 262013

If you’re looking into the cost of having a diamond certified, I’m sure you already have an idea of what a diamond certificate is. You may also know there are certificates provided by many different grading labs, and not all of these labs grade diamonds with the same accuracy.

Why have a diamond certified?

Many people are looking to have a diamond certified either because they want to sell it or buy it, and they want an objective opinion (or proof) of the quality. If you’re looking for the strictest and most accurate grading lab to certify your diamond, you undoubtedly send it to the GIA (Gemological Institute of America). They have a program where you can send them a stone and they provide you with a diamond grading report. There are a few other grading labs out there, but the GIA remains the authority in the field.

Cost of a GIA certificate

The cost of a Diamond Grading Report is based on the weight of the stone. It costs $64 for a 1/2 carat diamond up to $120 for a 2 carat. You can also purchase an eReport (online only) for slightly less. All diamonds are also checked for laser drilling, fracture filling, irradiation, and HPHT treatment. Any diamonds sent for grading must be loose or removed from the ring mounting. They will, however, determine the material (synthetic, natural, etc) of diamonds that are mounted in a setting.

Laser inscription for diamonds

If you’re selling a large diamond on the secondary market, you may also want to have the diamond laser inscribed. This will verify that the diamond you’re selling is indeed the diamond that is graded on the certificate. For an additional $12-$24, the GIA will laser inscribe the report number on the girdle of your diamond. It can only be seen with a loupe or microscope.

GIA Laser Inscription on Diamond Girdle

One thing you should know about the laser inscription is that it can be buffed off. It cannot be easily replicated so it works well for matching a certificate, just know that if you leave your stone with a jeweler you should verify the inscription with them so there’s recourse if the stone you get back is without it.

Do I need a certificate?

You don’t have to get a diamond certified in order to sell it. If you’re selling to a jeweler who knows how to grade diamonds, a certificate isn’t necessary and probably won’t get you a higher offer. It may be easier for the jeweler to re-sell the stone with a certificate, though. Just like it will be easier for you to sell it on the secondary market with a certificate.

For the majority of people looking to buy a diamond either from a jewelry store, online or in the secondary market, I would highly suggest you seek one that is certified by a reputable company. Remember that even GIA certificates can be inaccurate so it’s important to compare diamonds in person and know who you’re buying from.

If you can really trust the source you’re buying from, it’s okay to buy a non-certified diamond when the transaction meets all other criteria.


If you have any other questions about diamond certificates, submit them in the comments below!

  16 Responses to “How To Get A Diamond Certified”

  1. I had no idea that you can actually be a diamond certified. I think it’s really a great idea if you are into this business. I guess this will be an advantage as people will see you as someone reliable and trustworthy. It is really important to buy only from reputable companies as buying diamonds are a huge investment and of course, you don’t want to be scammed.

  2. I do not know if my diamond was GIA certified

    is there any way of looking it up ?

    My father in law made the purchase for my diamond.

    Can you look it up by his name and address?

    please advise,

    Thank you

  3. Great post! Been reading a lot about getting a diamond certified. Thanks for the info here!

  4. I bought a 0.2 carat diamond set in a gold ring with deep stamp UAE750 PG and before that there is shallow stamp GAJ. I research every page in internet what does it means but i cannot find answer. I hope you can help me. And what PG stand for.

  5. I believe UAE stands for United Arab Emirates; 750 = 18 carat and PG=Pure Gold. I had similar markings on a piece of jewelery I bought in Dubai many years ago. I would guess the GAJ is the makers mark, but don’t know for sure.

  6. I have a diamond with the laser inscription RH81-0909083. Where can I get more information about the stone?

  7. Since GAI will only appraise loose diamonds, in order to sell it how important is it for me to have all seven (center 1.04, then tiny ones down sides) removed and mail them it, get it back and put them back in, etc. I know it isn’t the toughest job in the world but it really would be a pain in the neck right now, as I need cash pretty quickly. How important is it? And are there certifiers that are NOT GAI but still reputable?

  8. Can I bring my diamonds to Gia Thailand to have certificate for them if I don’t have a diamond store ?

  9. i have a crystle clear stone just like ice with triangle shape. I want to check whether it’s diamond or not. So my question is
    1. How can I send my thing to GIA
    2. If it’s fake do I still need to pay the fee.

    I am from BHUTAN. A small country between China and india. Help me please

  10. hello i would like to know if there is a price list and any other additional chargers if there isn’t one i can look at what would it cost to get small diamonds certified in-between 5 and 10 points

  11. I need some information about diamond
    I am a diamond produzer i have contre
    Pepas but i need intanational Pepas
    How can i do?

  12. I have a Emerald but i could never afford paying that much since its 27,300 carats yes 27 thousand any tips on what i should do ? Im finally read to let her go thanks !

  13. How to get a schedule for application to get a colored diamond in HK.

    They gave an application form but i dont have the link to get a schedule.

    Thank you in advance

  14. I have a diamond, but no report or numbers at all how can I have a GIA certificate for it ?

  15. I have a loose .75 carat diamond that I want to sell. How do I actually go about getting it certified? Could a locall jeweler do it? If not where do I go? Thanks

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