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The GIA report of your future diamond is a vital part of the purchase that needs to be carefully examined and well-understood in order to get the diamond you want. The report includes detailed scientific and unbiased assessment and description of the diamond including many aspects of a diamond invisible to the naked eye.
The GIA report isn’t the be-all and end-all of diamond shopping as there are other factors that aren’t included in a standard GIA report which need to be considered. However, the grading report is still an invaluable and necessary tool in the diamond trade.
What is the GIA report?
GIA stands for the Gemological Institute of America which is one of the world’s foremost authorities on diamonds and diamond grading. Established in 1931, the GIA has become a cornerstone of the worldwide diamond trade and their diamond grading reports are a guarantee for quality. This means that getting a diamond with a grading report from the GIA is reduces the likelihood of purchasing an overpriced low-quality stone.
On the other hand, when you do get a GIA report with your stone, you’ll need to read it thoroughly and to understand its components. If this is the first time you’re dealing with diamonds, working with reputable vendors or consulting with a third-party jeweler to help you understand the GIA report is a advisable.
What are the main components of a GIA grading report?
Here’s a quick rundown of what you’ll get in a GIA report:
The GIA grading report authenticates your diamond and is proof of its value. All diamonds graded by the GIA are laser inscribed on the girdle with the unique serial number, which is invaluable to identify and evaluate your diamond.
How To Read GIA Diamond Grading Report
1- Date : Date diamond was examined by GIA
2- GIA Report Number: Unique number registered in GIA’s extensive global database, which is the same number inscribed on the diamond’s girdle.
3- Shape and Cutting Style: Diamond shape (Round, Oval, Princess, Cushion, ...etc) and the diamond cutting style or facet arrangement (Brilliant, modified, Excellent, ..etc).
4- Measurements: Diamonds dimensions listed in millimeters.For Round diamonds, measurements are listed as ( smallest diameter-largest diameterxdepth).
5- Carat Weight: diamond weight given in carats, recorded to the nearest hundredth of carat. One carat is equal to ⅕ gram.
6- Color Grade: Rates absence of color in the diamond, from colorless to light yellow or brown when you compared to a master colorless diamonds. Diamonds color scale starts from D (colorless) to Z (Yellowish, relatively to colorless stones). If “*” is next to the color grade, a color treatment was detected.
7- Clarity Grade: Rates absence of inclusion and blemishes. Diamond clarity graded on a scale from Flawless to included, based on size, nature, number, position, and relief of characteristics visible under 10X magnification.
8- Cut Grade: Evaluates quality and craftsmanship of the diamond cut. Diamonds are examined face-up. Cut graded on scale from Excellent to poor.
9- Polish: Examines the smoothness of the diamond’s surface. Graded on scale from Excellent to Poor.
10- Symmetry: Evaluates the exactness of diamond’s outline, shape, placement, and alignment of its facets. Graded on scale from Excellent to Poor.
11- Fluorescence: Level of glow and color of the diamond under ultraviolet rays (such as black light).
12- Inscription(s): Texts, symbols, logo, or numbers inscribed on the diamond’s girdle.
13- Comments: Any additional descriptions or features that are not mentioned on the report. If the diamond was gone under any sort of treatments, such as laser drilling, it would be represented in the comments section.
14- Proportion Diagram: Graphic representation of the diamond’s proportions.
15- Plotted Diagram: Graphic representation of the diamond’s clarity indicating the type, position and approximate size if clarity characteristics.
16- Key to Symbols: Lists the characteristics and symbols shown in the plotting diagram, if present.
17- GIA Color Scale: Representation of GIA Scale of diamond color grades. Available from D to Z.
18- GIA Clarity Scale: Representation of GIA grades of diamond’s clarity. Available from Flawless to I2.
19- GIA Cut Scale: Representation of the GIA grades of diamond. Available from Excellent to Poor
20- Security Features: GIA microprinting , security screens, watermarks, a two-dimensional barcode, a hologram, and sheet numbering safeguard report integrity and facilitate document authentication.
21- QR Code: When scanned, it verifies data on the report against GIA database,