How to Read a GIA Diamond Grading Report
The GIA Diamond Grading Report includes an assessment of the 4Cs – Color, Clarity, Cut, and Carat Weight – along with a plotted diagram of its clarity characteristics and agraphic representation of the diamond’s proportions. GIA issues the Diamond Grading Report for loose natural diamonds only, weighing 0.15 carats or more. For standard roundbrilliant cut diamonds falling in the D-to-Z color range, the report also includes a GIA Cut grade.

1 . D AT E
Date diamond was examined by GIA.
2. REPORT NUMBERUnique GIA report number registered in GIA’s extensive global database.
3. SHAPE AND CUTTING STYLE
The outline of the diamond (shape) and the pattern of the facet arrangement(cutting style).
4. MEASUREMENTS
Diamond dimensions listed as “minimum diameter – maximum diameter xdepth” for round diamonds and “length x width x depth” for fancy-shaped
diamonds.

5 . C A R AT W E I G H T
Weight given in carats, recorded to the nearest hundredth of a carat. One carat
is equal to 1/5 of a gram.
6 . C O LO R G R A D EThe absence of color ranging from colorless to light yellow or brown whencompared to GIA Master Color Comparison Diamonds. Graded on a D-to-Z scale. If“*” appears next to the color grade, a color treatment was detected.
7. CLARITY GRADE
The relative absence of inclusions and blemishes. Graded on a scale fromFlawless to Included based on size, nature, number, position, and relief ofcharacteristics visible under 10x magnification.

8. CUT GRADE
For standard, D-to-Z color, round brilliant diamonds. Cut grade incorporates theaspects of face-up appearance, design, and craftsmanship. Graded on a scale fromExcellent to Poor.
9. POLISH
Smoothness of the diamond’s surface, assessed on a scale ranging fromExcellent to Poor.
10. SYMMETRY
Exactness of the diamond’s outline, and the shape, placement, and alignmentof its facets, assessed on a scale ranging from Excellent to Poor.
11. FLUORESCENCE
Strength and color of the diamond when viewed under long-wave ultraviolet
light. A fluorescence description of “none” represents a range of fluorescencefrom Indiscernible to Very Faint. Used for identification purposes.

16. KEY TO SYMBOLS
Lists the characteristics and symbols shown on the plotting diagram, ifpresent.
1 7 . G I A C O LO R S C A L E
Illustrates the GIA Color grades and their relative positions in the GIA DiamondColor Grading System.
18. GIA CLARITY SCALE
Illustrates the GIA Clarity grades and their relative positions in the GIA
Diamond Clarity Grading System.
19. GIA CUT SCALE
Illustrates the GIA Cut grades and their relative position in the GIA Diamond
Cut Grading System. Available for standard round brilliant cut diamonds in theD-to-Z color range and Flawless-to-I3 clarity range.

12. INSCRIPTION(S)Any text, symbols, logos, or a unique GIA report number inscribed on thediamond’s girdle.

2 0 . S E C U R I T Y F E AT U R E S
Microprinting, security screens, watermarks, a two-dimensional barcode,a hologram, and sheet numbering safeguard report integrity and facilitate
document authentication.

13. COMMENTS
Additional identifying characteristics or features that are not otherwise represented onthe report. If a treatment is detected, such as laser drilling, it would be described here.

21. QR CODE
A two-dimensional barcode that, when scanned, verifies data on the reportagainst the GIA database.

14. PROPORTION DIAGRAM
Graphic profile representation of the diamond’s actual proportions.
1 5 . P LO T T E D D I A G R A M
Approximates the shape and cutting style of the diamond. Symbols indicate thetype or nature, position, and the approximate size of a clarity characteristic.