Lesson 6: Traditional Diamond Cut Grading Methods


Step 4: Gem Grading

Lesson 15

Why Learn Traditional Diamond Cut Grading Methods?

In 2005, the Gemological Institute of America (GIA) released a new, modern method for evaluating diamond cuts. However, beginning gemologists should learn traditional diamond cut grading for two reasons.

  • You’ll likely come across grading reports that utilize older methods. They’ve been used on thousands of reports that will be around for many years to come.
  • Learning traditional diamond cut grading will show you how to evaluate cuts by eye. When you examine diamonds away from your shop, you’ll need something to fall back on.

The Ideal Cut (May Not be Ideal)

Of the Four Cs of gem grading, cut ranks as the most important for diamonds. The cut (or make) determines why one diamond features spectacular fountains of light, while another looks lifeless and dull. You’ll find volumes and volumes written about cut. …

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