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GIA Excellent Cut

The Federal Trade Commission says that a diamond can't be perfect.
Guess we'll just have to settle for Excellent.

GIA Excellent Polish
+ GIA Excellent Symmetry
+ Excellent Cut Grade
= Exceptional Visual Performance!

Visit our online diamond inventory and find the ideal cut diamond of your dreams. We've taken the guesswork out of the selection process by hand selecting the best that our cutters have to offer! Our super ideal cut diamonds deliver kaleidoscope brilliance and incredible dispersion! A "super ideal cut diamond" is a diamond cut to the center range of the spectrum allotted for the zero ideal cut proportions rating! Don't settle for broad spectrum ideals (that aren't ideal by our standards).

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Pictured above on the left is the new & improved GIA Diamond Grading Report. Beginning January 1, 2005 the GIA Diamond Grading Report was upgraded to include an Overall Cut Grade and the measurements for Crown & Pavilion Angle. GIA Diamond Grading Reports issued prior to January 1, 2005 like the one pictured on the right did not include this information which made it difficult to determine the potential visual performance of the diamond without the addition of a Sarin computerized proportions analysis like the sticker attached to the report.

The format of the GIA Diamond Grading Report is as follows:
  1. is the lab report number, this is the reference to the diamond and the corresponding data. The date the lab report was issued also appears in this region.
  2. is the shape of the diamond.
  3. is the measurements of the outside diameter and depth of the diamond in millimeters.
  4. is the carat weight of the diamond, followed by the color and clarity.
  5. is the overall Cut Grade of the diamond, see detail below*
  6. is the Finish grade of the diamond (polish & symmetry)
  7. is the degree of fluorescence (none, faint, medium, strong)
  8. the Comments section is used define any additional clarity characteristics such as minor inclusions that are not substantial enough to be noted on the plotting diagram (Area 9/10) so you might see something like "pinpoints not shown".
  9. is a plotting diagram which represents the top portion of the diamond.
  10. is a plotting diagram which represents the bottom portion of the diamond. The red star that we placed between the three o'clock position of the upper plotting diagram (9) and the nine o'clock position of the lower plotting diagram (10) represents where the two halves of the diamond that are located in alignment with each other. Thus if a feather were indicated in that region of both the upper and lower halves of the plotting diagrams, it would be located in the exact same region of the actual diamond. The three o'clock position of the lower plotting diagram folds under to align with the nine o'clock region of the upper plotting diagram.
  11. is the Key to Symbols which indicates the type of inclusions contained within the diamond as indicated on the upper and lower plotting diagrams. Note that earlier copies of AGS lab reports listed all of the inclusion types beneath the Key to Symbols and that newer AGS lab reports list only the specific inclusions contained within the diamond described on the lab report.
  12. is a scale version of the profile of the diamond based upon the actual proportions of the diamond.
    a. is the table diameter of the diamond stated as a percent.
    b. is the total depth of the diamond stated as a percent.
    c. is the crown angle of the diamond stated in degrees. Note that the crown height percent is indicated directly across the diagram from the crown angle.
    d. is the pavilion angle of the diamond stated in degrees. Note that the pavilion height percent is indicated directly across the diagram from the pavilion angle.
    e. is the girdle thickness and finish characteristic.
    f. is the culet size of the diamond, the AGS uses the term "pointed" where the GIA uses the term "none" to represent the smallest size of culet (bottom point).
The GIA added the proportions diagram located to the right of the clarity characteristics plotting diagram to their lab report at the beginning of 2006. The proportions diagram displays a rendition of the profile of the diamond that is to scale based upon the proportions of the diamond. The dimensions indicated on the proportions diagram represent the average measurements for each section and thus it is important to obtain a computerized proportions analysis of the diamond which exhibits the facet-by-facet measurements which will provide you with the high and low measurements used to calculate the average.

Why? Because an average pavilion angle of 40.8 degrees as indicated above could be the result of a tight range such as a low of 40.5 degrees and a high of 41.1 degrees or something more broad and imprecise such as a low of 39.8 degrees and a high of 41.8 degrees! All of the diamonds listed in our Private Reserve are accompanied by detailed Sarin computerized proportions analysis on the diamond details page. We take the guesswork out of buying a diamond!
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