Diamond Certificates

If you’re out there looking for the best diamond for your money, then please contact us and let us know your budget and what you’re looking for. We’ll sift through thousands of diamonds online and send you suggested stones to choose from that fit your needs the best.


Bottom Line Recommendation:

Some labs are more strict, and some are more loose.  All that matters, though, is that you pay the right price for the diamond you are buying. 

If you are buying online blind (using James Allen’s cutting edge diamond viewing tool is very much recommended), then stick with the GIA which is the most consistent lab available.  I have personally witnessed numerous gross mistakes by each major gemological lab (yes, including the GIA). 

When you’re a big diamond company, and you’re sending thousands of stones a month to a lab, 5% inconsistency isn’t such a big deal.  But as a consumer, why risk being stuck with that 5%?  Just always keep in mind that you are buying a diamond, not a piece of paper.

The Importance of Reputation

When choosing a diamond, the reliability of the color and clarity grades (and in some instances the cut grades) is only as good as the certifying gem lab’s reputation.

Consistency First

But there’s one important thing to remember, the only thing that really matters when discussing different labs is not how strict they are, but how consistent they are.

If one lab consistently offers a single color upgrade over another lab, then that lab is by no means less “authentic.”

Diamond Grading is Subjective

All diamond grading is subjective, and contrary to popular belief, there is no one central organization to define mathematically what a “G” color is or what an “SI1″ clarity looks like.

So if one lab will consistently call one color grade “G” while another lab will consistently call that same color “H”, it’s perfectly acceptable and reasonable — as long as they do so consistently.

Price Before Certificate

You, as a consumer, though, need to remember one more very important thing:  the price needs to be right for the diamond, regardless of the accompanying certificate.

Different Laboratories Give Different Results  

Also, it is important to realize that every lab has its quirks.  Some are looser in color.  Some are looser in clarity.  Some will always upgrade specific color ranges, while others favor particular arrangements of inclusions.

Smart diamond companies use this knowledge (gained from sending thousands of diamonds a month to different labs) to maximize their results.

Click on the images below to read about different specific labs.

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If you have any questions, please post them in the comments below.  I will usually respond within 24 hours.


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Leave a Comment

213 Comments

  1. Antonio     Reply

    I have a question. Please, tell me Tiffany & Co. using EGL for they diamonds certifications? Or GIA? I like to know, what certifications they are using? Thank you.

  2. Mike     Reply

    No its not. But diamond earrings of that size rarely have legit certs. So long as you didn’t actually pay for EF IF, you should be fine.

  3. Mike     Reply

    The certification is useless.

  4. Debby     Reply

    Hello!
    Is a diamond appraisal by GSL reliable when compared to a GIA appraisal? Thank you for your time. Happy New Year!,

    • Mike     Reply

      No it is not. They aren’t in the same ballpark.

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