Uniform and Consistent Grading - PGS is one of the few labs that promise and deliver uniform and consistent grading. Both PGS offices have identical 1 carat diamond master sets for proper comparison and diamond color grading. By setting standards one state at a time, PGS lives up to its reputation everyday. Cut Grades - Three cut grades are offered by PGS: "Top Ideal Cut", "Ideal Cut" and "Premium Cut." Two cut designations are also provided: "Ideal Proportions" and "Premium Proportions." Clarity Grading - PGS issues a clarity grading of SI3 Prompt Service - Grading Reports are provided promptly by PGS -- within 48 to 72 hours -- as well as full enchancement/treatment disclosure. Polygon Upload - Polygon members can readily list PGS reports to CertNet to buy and sell diamonds and colored gemstones online. Laser Inscription - PGS adds laser inscription of certificate numbers, brands or special messages to the girdle of gemstones. Quarterly Newsletter - The Professional Gemologist, a quarterly newsletter published by PGS, covers gemological information of widespread interest and impact to the Grading Services - PGS offers three versions of grading reports for loose diamonds and colored gemstones, as well as a report for mounted jewelry. PGS Certificate of Quality - A signed document listing the results of a complete analysis including weight, color, clarity, plot, measurements, proportions, finish and fluorescence.. PGS Consultation - A limited statement of quality characteristics including weight, color, clarity, plot, measurements, and an opinion on potential improvements, if any, by recutting PGS Mini Report - A consultation-sized diamond report, designed mainly for the trade, that supplements the consultation. It contains all certificate information including a key to symbols. Grading Report for Mounted Jewelry - Complete analysis includes weight, color, clarity, digital image, measurements and finish. Jewelry items are engraved with the PGS report number.