AGS Diamond Grading System - American Gem Society
When writing the grades of a diamond using the AGS Scale, diamond Cut grade is first, then diamond Color, Clarity, then Carat Weight—in that order. If a diamond possessing the finest diamond Cut grade is also colorless, free of inclusions and blemishes, and weighs one carat, it would be written as: 0/0/0–1.000 carat.
4 C's of Diamonds | Diamond Grading Chart
Here you will learn how GIA diamond grades are established, and how those grades affect the diamond's price. Each of the four C's (Carat Weight, Cut, Color, Clarity) is accompanied by a diamond chart illustrating the differences between grades.
Diamond Clarity: Grading Scale and Buying Tips | Blue Nile
Diamond clarity is the least important factor when choosing to buy a diamond because most diamonds have blemishes and small inclusions that are microscopic, unable to be seen with an untrained or unaided eye.
GIA Diamond Grading Reports | 4Cs of Diamond Quality by GIA
The GIA Diamond Dossier offers the same grading information as the GIA Diamond Grading Report but without the plotted diagram. As an added security feature, the Dossier service includes a microscopic laser inscription of the report number on the diamond’s girdle.
Diamond Grading: The 4 C's - Gemology Online
Diamond Grading: The 4 C's. The 4 C's, when referring to diamond value, are color, clarity, carat weight and cut. All four factors are equally important in determining the final cost of a diamond.
Diamond Color Chart | GIA Diamond Color Scale
DIAMOND COLOR CHART. Diamonds come in a variety of colors, some of them highly prized (pinks, blues, even yellow). However in a white diamond, the presence of a yellow tint will lower the price of a diamond.
Diamond Grading, Diamond Grades, Quality, Certification
Diamond Grading, Grades. When purchasing certified diamonds it is important to understand the diamond grading criteria used by the laboratories performing the certification. Diamond grading covers numerous aspects of each individual diamond's qualities, but there are four grades which are critical to understand:
Diamond clarity - Wikipedia
Diamond clarity is the quality of diamonds that relates to the existence and visual appearance of internal characteristics of a diamond called inclusions, and surface defects, called blemishes. Clarity is one of the four Cs of diamond grading, the others being carat, color, and cut.
Diamond Color: Grade Chart and Buying Tips | Blue Nile
The GIA diamond color scale is the leading industry standard of diamond color grading. Before this was the standard, other color grading scales used A, B and C, so GIA started their scale at D to avoid confusion.
Diamond Facts and Diamond Grading Information - How to ...
The following guide assumes the Gemological Institute of America (G.I.A.) grading system. This is the worlds most recognized system of evaluating a diamonds quality and value.