GIA 4Cs Guide App

GIA’s 4Cs Guide app features video and interactive tools that teach you about how GIA grades color, cut, clarity and carat weight. It explains GIA’s D-to-Z color scale and how diamond color can affect value, GIA’s clarity scale and how diamond clarity can affect value, the factors that affect a diamond’s cut grade and the origins of the carat system.

Available in English and Simplified Chinese.


Interactive tools show:
  • How diamond color changes across the GIA D-to-Z Color Scale
  • Typical inclusions and blemishes at various points in the GIA Clarity Scale
  • A diamond’s anatomy and how various parameters influence a diamond’s cut grade
  • How a diamond’s size changes by carat weight and enables you to compare the sizes of different diamonds
  • An interactive GIA Grading Report Anatomy – to help consumers understand the different elements of a GIA report

Additional features include:
  • Retailer Lookup (network connection required) allows consumers to find retailers that sell GIA-graded diamonds and/or have GIA-trained sales associates.
  • Information on fluorescence, common diamond treatments, laboratory-grown diamonds and simulants.
  • Direct Access to GIA Report Check (network connection required) - GIA’s online database of reports. Consumers can verify the contents of a GIA report and view a PDF version of that report simply by entering a GIA report number.

4Cs App for Retailers

Retailers can find a version of the 4Cs app for use at point of sale with
  • Informative and interactive content to help you educate your clients about diamonds, the 4Cs and GIA reports
  • Direct access to GIA Report Check (network connection required)
  • Perfect for over-the-counter presentations using any tablet
Available in English and Simplified Chinese.

Learn more and download

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