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The girdle is the series of facets around the widest part of the diamond, used by the jeweler to set the stone. A very wide girdle adds to carat weight, while a very thin girdle can set up the diamond for an accidental fracture or chipping.

An ideal girdle is thin to slightly thick. Here is the range of GIA grades for girdle:

  • Extremely Thin
  • Very Thin
  • Thin
  • Slightly Thin
  • Medium
  • Slightly Thick
  • Thick
  • Very Thick
  • Extremely Thick
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9y ago

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