Loose, natural diamonds may be submitted to the GIA Laboratory for analysis to determine diamond type: Ia, Ib, IIa or IIb. This service provides the diamond type that relates to a diamond's chemistry and purity. This additional information has proven to be of interest to many connoiseurs. This service is supplemental to a GIA Diamond Grading Report, Colored Diamond Grading Report, or Colored Diamond Identification and Origin Report either issued previously or at the time of analysis. The fee varies depending on whether the results are disclosed verbally or by letter as follows:

• Verbal results only: $125
• Letter describing results: $200
• Letter describing results with photo: $275