Download Grading Gemstones Guide

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There are many factors to consider in gem grading. It is why we have created this booklet to serve as reference on how to judge and value the most common gems by Carat, Cut, Color and Clarity.

What's more in our guide?

  • The difference between grading diamonds and colored gemstones
  • A brief understanding on the common treatments for rubies, sapphires and emeralds
  • Gemstone origin and how this affects their value