Essay on Diamond - The Most Prestigious Gem.
Diamond clarity spans 6 categories with a total of 11 clarity grades In 1953, Richard T. Liddicoat and colleagues established the Gemmological Institute of America (GIA) diamond grading system and clarity scale. The GIA diamond grading scale is divided into 6 categories and 11 diamond clarity grades. I1, I2, I3 Included Diamonds.
Ags grading cards for essays. 3 Easy Steps to Grading Student Essays. by Susan Verner, views. In a world where number two pencils and bubbles on an answer sheet often determine a student’s grade, what criteria does the writing teacher use to evaluate the work of his or her students? After all, with essay writing you cannot simply mark some answers correct and Author: Susan Verner.
The color grading scale goes all the way to Z, but diamonds lower than M color are not often found on the market because of their low quality. Another aspect of color is fluorescence, or how a diamond reacts to ultraviolet (UV) light.And fluorescence can be found in around 35 percent of diamonds. Diamonds with fluorescence will glow a faint hue under UV light.
When grading a student essay with a rubric, it is best to read through the essay once before evaluating for grades. Then reading through the piece a second time, determine where on the scale the writing sample falls for each of the criteria. If the student shows excellent grammar, good organization and a good overall effect, he would score a total of ten points. Divide that by the total.
The natural colored diamond grading system is based on the 4 Cs, just like the colorless diamond grading system. Grading a natural color diamond’s hue is another story though. It is much more complicated since color diamonds come in an infinite number of colors and nuances. Additionally, contrary to the colorless grading system, which has been established long ago, the grading of colored.
Diamond grading is a complex process that is performed to define the characteristics of a given diamond. The diamond grading system is a standardized, global way for jewellers, laboratories, and consumers to know about the quality of a diamond. Diamond grading basically is the assessment of small imperfections on the surface and internally. The surface flaws are called blemishes, and internal.
In terms of color grading, most diamonds have at least small hints of color. Diamonds that are completely colorless are extremely rare. The smallest difference in tint found in a white diamond can actually mean thousands of dollars when it comes to the price tag. Most tinge in white diamonds is caused by trace impurities in the earth in which the diamond grows. These impurities are absorbed by.