If you have questions or would like assistance in your selection from an experienced GIA diamond grading graduate, call: 1-877-968-7342.
This is the best cut grade assigned by GIA (to Round shapes only) producing the maximum sparkle in a diamond. An excellent (or AGS Ideal) cut diamond has optimal proportions as determined by GIA and thus reflects the maximum light producing the greatest brilliance and scintillation.
This grade of diamond has a minor tint that is barely noticeable especially when mounted. I-color diamond is still in the near-colorless range. In yellow gold, I-color diamonds face-up colorless. Additionally, medium or strong blue fluorescence gives an I-color diamond whiter appearance.
The inclusions in this Slightly Included diamond can be visible at 10x power magnification. SI1 characteristics usually are not visible to the unaided eye face-up. SI1 grade diamonds are not as rare as VS and VVS grade diamonds, hence they are less expensive and offer a great value.
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