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.
A gemstone or gem (also called a fine gem, jewel, or a precious or semi-precious stone) is a piece of mineral crystal, which, in cut and polished form, is used to make jewelry or other adornments. few gemstones are used as gems in the crystal or other form in which they are found. Most however, are cut and polished for usage as jewelry. The picture to the right is of a rural, commercial cutting operation in Thailand. This small factory cuts thousands of carats of sapphire annually.