The stage is based on: 1  The prostate biopsy results (including the Gleason score) 2  The blood PSA level at the time of diagnosis. 3  The results of any other exams or tests that were done to find out how far the cancer has spread.
Like all commodities even gemstones are graded.The quality and cost of a gemstone completely depend on its cut. Grading the quality of gemstones: Alpha grading is a commonly heard term in conjunction to grading of gemstones.This grading is based on several qualities such as colour, cut and clarity.AA quality gemstones are the most sought out precious stones, for the cut is perfect and the colour is vibrant. AAA gemstones are a lot more affordable than super fine stones and are generally used in making jewellery. a5555597-894e-414c-8244-6627393966a9|0|.0|27604f05-86ad-47ef-9e05-950bb762570c.
Unlike diamonds, color gemstones do not have a perfect grading system. Hence, we along with a lot of the leading jewelers grade our Emeralds as Natural AAA, Natural AA or Natural A.Natural AAA (Best). Natural AAA gemstones are the top 10% of gemstones in terms of quality.They are rich green, moderately to slightly included and exhibits high brilliance.atural A (Good). Natural A gemstones are the top 50%-75% of gemstones in terms of quality. They are Dark green, opaque and heavily included. They are comparable to that used by mall jewelers or small family jewelry shops.