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Established in 1917   

 

Blue Nile diamond ring

 
  Let our gemologists and diamond sales consultants show you the best deals in the area.  Learn about the "4 Cs."
  • Carat Weight
  • Color
  • Clarity
  • Cut

Because diamonds are so valuable, it’s essential for industry professionals to have a universal grading system when comparing diamond quality. In the mid-twentieth century, GIA developed the International Diamond Grading System™ and the 4Cs as a way to objectively compare and evaluate diamonds.

The Four Cs of diamond quality will give you a multitude of information about a diamond’s characteristics and value, but they can’t begin to describe one elusive quality – beauty. To do that, you’ll need to experience the diamond with your own eyes.

GN Diamond Search