Education Center

Diamond Cut

  • While discussed to a lesser degree the Cut of a diamond's is its most important characteristic.
  • It has the greatest overall impact on a diamond's fire and beauty.
  • It maximizes the diamonds reflectivity of light, what we think of as sparkle.

Karat’s in-house gemologists recommend selecting the finest cut grade within reach of your budget. The reasoning is powerful because no other characteristic has a greater influence on a diamond's appearance.

A diamond’s cut grade is an objective measure of a diamond's light return, or, what we generally refer to as sparkle. When a diamond is cut with the correct angles and proportions, the majority of light is returned out of the top of the diamond. If it is cut too shallow, light penetrates out of the bottom; too deep and it reflects out of the side.

Cut Grades

  • Karats Signature cut: the most brilliant cut available, representing the top 1% of diamonds quality based on cut. With the highest grades of polish and symmetry allow it to reflect even more light than the industry standard ideal cut.
  • Ideal cut: industry standard it represents the top 3% of diamonds quality based on cut. Reflects virtually all light that enters the diamond. A rare cut.
  • Very good cut: Represents the top 15% of diamonds quality based on cut. It reflects nearly as much light as the ideal cut, but for a lesser price.
  • Good cut: Represents the top 25% of diamonds quality based on cut. It reflects most light that enters. Much less expensive than a very good cut.
  • Fair cut: Represents the top 35% of diamonds quality based on cut. A quality diamond, but a fair cut cannot be as brilliant as the better cuts.
  • Poor cut: Diamonds that are generally so deep and narrow or shallow and wide that they reflect most of the light out the sides and bottom. Karat does not carry diamonds with cut grades of poor.

What Cut Grade Is Perfect For Me?

Diamonds with a cut grade of good, very good or ideal each represent an excellent combination of beauty and value for every budget.

Once you have a solid understanding of how cut affects a diamond's performance (fire or sparkle), please take time to learn about the second of the Four C’s – Color.

To learn further about cut, including technical information on please visit our Tips and Hints section.

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