The jewelry industry refers to Cut in two ways:
AGS Ideal Cut is a diamond where all the diamond’s Cut quality factors (light performance, proportions, and polish and symmetry) exist at the highest possible levels, making the maximum contribution to the diamond’s beauty and value.
The AGS Laboratories uses the AGS Performance-Based Cut Grade system, which is based on the overall performance of a diamond, specifically in the area of Light Performance. When analyzing the overall performance of the diamond, we take the following into consideration: light performance (contrast, leakage, dispersion, and brightness), proportion factors (girdle thickness, Culet size, Weight Ratio, durability, and tilt), and finish (Polish and Symmetry).
Carat Weight is a diamond’s physical weight measured in metric carats. One metric carat equals 0.200 grams, or one-fifth of a gram. In more familiar terms, that is a little more than 0.007 of an ounce avoirdupois. (Avoirdupois is the common weight system we use in the United States.) For precision, the carat is further divided into hundredths, and each of those is called a point. In the AGS Laboratories diamond lab, Carat Weight is measured using a digital scale.
Clarity is the degree to which a diamond is free from inclusions and blemishes. Inclusions are internal characteristics; blemishes are external characteristics. Many diamonds have Clarity characteristics that can be seen only with magnification. The Clarity grade is subjectively based on the nature, location, size, quantity, and relief of the inclusions. At the AGS Laboratories, a minimum of two experienced diamond graders grade each diamond for the Clarity grade.
Color normally refers to where a diamond’s Color falls within the range from colorless to light yellow or light brown. At the AGS Laboratories, the Color of a diamond is determined by at least two experienced color diamond graders using a set of master diamonds.
No. The AGS Laboratories provides an unbiased, independent, and expert third-party opinion on the 4Cs of a diamond. You never should see an appraisal amount on a diamond grading report. Price should be determined by the jeweler, not the laboratory.
Each diamond grader is required to pass the Gemological Institute of America (GIA) Diamond and Diamond Grading courses. In the AGS Laboratories, several Certified Gemologists oversee the work of each diamond grader.
A minimum of two (2) diamond graders analyzes each diamond factor.
Yes, the AGS Laboratories grade brown diamonds.
Carat Weight is a diamond’s physical weight measured in metric carats. One metric carat equals 0.200 grams, or one-fifth of a gram. In more familiar terms, that is a little more than 0.007 of an ounce avoirdupois. (Avoirdupois is the common weight system we use in the United States.) For precision, the carat is further divided into hundredths, and each of those is called a point. In the AGS Laboratories diamond lab, Carat Weight is measured using a digital scale.
Each diamond grader is required to pass the Gemological Institute of America (GIA) Diamond and Diamond Grading courses. In the AGS Laboratories, several Certified Gemologists oversee the work of each diamond grader.
A minimum of two (2) diamond graders analyzes each diamond factor.
Yes, the AGS Laboratories grade brown diamonds.
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