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GIA certified gemologists Three certification levels Extra discount for multiple orders Save with "no certificate" option for fakes
Slide background Three certification levels Customer loyalty rewards GIA certified gemologists All stones USA tested FTIR, ED-XRF and Raman Spectroscopy Traditional and advanced testing

Are you serious… a gem report for $16.95?

Why Certify a Gem?

Did you get the stone you paid for? Are you trying to sell a gemstone for the best price? Find out how a gem report can help.


Compare Gem Reports

From traditional to advanced scientific testing, compare our reports and fees. Read the fine print. Order the certification level you need.


Welcome eBayers!

Buyers – find out if you got what you paid for.  Sellers – certify top stones to improve your bottom line.  Check out our special resources for eBayers.

GIA Certified Gemologist?

Want to make some extra income?  If you’re a well qualified GG and know your colored stones, find out about working for us here.

About Us

Colorado Gem Services LLC aims to provide reliable independent colored gem reports at an unbeatable price. Our unique business model frees CGS gemologists from time-consuming paperwork, enabling them to analyze more stones.  That means bulk savings, which we pass on to our clients. 

Every gem entrusted to us is examined in the USA by a highly trained and accredited professional gemologist using traditional gemological equipment and advanced scientific analysis such as FTIR, ED-XRF and Raman spectroscopy.  We combine modern analytical techniques and extensive practical skills to interpret gemstone characteristics. No students. No shortcuts.  No conflicts of interest – we’re not gem dealers.

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    We think colored stones rock

    Puns aside, most gemologists focus on diamonds and not too many have specialized knowledge of colored stones. Our team brings together a wealth of experience in this fascinating field.

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    More bang for your buck

    We’re proud to provide basic certification with more detail than most for a lot less. If you need advanced scientific testing, you’ll find our prices hard to beat.

  • Your stone is safe with us

    We’ve all heard the horror stories about dubious Asian vendor/labs swapping out stones.  Just another reason to have your gemstones certified right here in the USA.

© Copyright 2013 Colorado Gem Services LLC