In a particular light source and a comparison environment use a fine match stone
Posted by lisa on January 4th, 2018
In a particular light source and a comparison environment, use a fine match stone group to find the characteristic color of the diamond and set the color level. GIA uses specific grade terms to define the range of colors: Faint, Very Light, Light, Fancy Light, Fancy, Fancy Intense, FancyDark, Fancy Deep, Fancy solid 18k gold Van Cleef & Arpels Jewelry Vivid.
Here we start with the most common GIADiamond Dossier to start our interpretation
1: GIA LOGO
2: the type of the GIA certificate (big card, small card, diamond certificate)
3: certificate number;
4: date, laser mark, cut type and size;
5: 4C part, weight, color, clarity, cut
6: inclusions, degree of modification, fluorescent reflection and special lettering;
7: show the clarity of the diamond, color and cut in the GIA level in the relevant position;
8: Diamond cut data;
9: anti-counterfeiting watermark; other: inspection company nationality; certificate statement
GIA certificate Cartier solid 18k gold Love Bracelet small attachments specific details
Laser Inscription Registry :: GIA 13733089 – Laser code: GIA 13733089
Shape and Cutting Style: Round Brilliant – Diamond Shape: Round Bright Zhuo type
Measurements: 5.70-5.74 x 3.58 mm – Size: 5.70-5.74 refers to the maximum and minimum diamonds diameter, 3.58 is the height of the entire diamond.
Carat Weight :: 0.74 – Carat weight 0.74 karats
Color Grade: G – Color rating: G color level
Clarity Grade: SI1 – Clarity Grade: SI2
Cut Grade :: Very Good – Cut Grade: Very Good
Clarity Characteristics: Crystal, Feather – inclusions Features: Crystals, Feathers
Finis: – Modification
Polish :: Very Good – polished: very good
Symmetry :: Very Good – Symmetry: Very good
Fluorescence :: None – Fluorescence: None
After reading so many English data is estimated that a little dizzy, this item of the data are what it means? What is the standard of division? Replica Van Cleef & Arpels Bracelet What kind of data may be possible? We are now starting to analyze.
First we are from the most obvious colors
Color Grade: D E very white, F G excellent white, H white, IJ yellowish white, KL light yellow and white, M, N light yellow. GIA’s color stone is from the E color, there is no D color than the color stone, GIA is the use of the upper limit color method. What is the upper limit color method? If the color of a diamond in the GIA than the color stone E and boulder F between, then the diamond grade is E, rather than F color, GIA color stone is the upper limit of the diamond, if the color Stone is F, meaning that Replica Van Cleef & Arpels Earrings the color stone is F grade inside the best, more than its color is E color, and so on, so GIA’s color stone is no D color, because there is no higher than the D color , More than their E color than the color stone is D color.
Diamond color grading is to be carried out under the diamond color lamp, but will be affected by the ambient light, and GIA is a patented diamond box, is a 4 week closed, white background box, leaving a Mouth to the inspectors observed, the light source installed in the box, by the surrounding environment is relatively small.
