GIA iD100TM Gem Testing Device

Patent Pending. GIA Item Number: 220000.
Patent Pending. GIA Item Number: 220000.

With the growing availability of synthetic diamonds in the marketplace, full disclosure and confidence in knowing what you are buying is now more important than ever. GIA has developed a sophisticated and easy-to-operate desktop instrument to screen for these stones.

The GIA iD100™ combines advanced spectroscopic technology with GIA’s 60 years of diamond and gemstone identification research to distinguish natural diamonds from synthetic (HPHT and CVD) diamonds and diamond simulants.

GIA iD100™ Gem Testing Device


List Price: $4,995.00 USD


  • Colorless to near-colorless diamond identification
  • Automatic identification with results in <2 seconds
  • Easy reading result with audio: Pass or Refer for further testing
  • Tests both mounted and loose diamonds 0.9 mm or greater in diameter (approx. 0.005 carat)

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How to Use the GIA iD100

Explore the features of the GIA iD100 and learn how to use it.

GIA iD100 User Guides

Download the GIA iD100 user guide, available in 5 languages.

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GIA Melee Analysis Service

Learn more about the GIA Melee Analysis service and how to submit stones for analysis and sorting.

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Synthetic Diamond Articles

Decades of GIA's research efforts to understand and identify synthetic diamonds have been published in Gems & Gemology.

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