What are the grades of diamond polishing?
Can you elaborate on the various grades of diamond polishing and what sets them apart from each other? I'm particularly interested in understanding how the different levels of polishing affect the overall quality, clarity, and sparkle of a diamond. Is there a standardized grading system used in the industry to classify these grades, and if so, what are the key factors considered during the grading process? Additionally, what impact does the polishing grade have on the diamond's value and desirability in the market?