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While several grading laboratories use the D–Z color scale (most notably: GIA, IGI, & GCAL by Sarine ), there is no universal standard for how the grades are applied. Diamond color is graded by comparing a sample stone to a master stone set of diamonds.
The Gemological Institute of America (GIA) is a nonprofit institute based in Carlsbad, California. It is dedicated to research and education in the field of gemology and the jewelry arts. [ 1 ] Founded in 1931, GIA's mission is to protect buyers and sellers of gemstones by setting and maintaining the standards used to evaluate gemstone quality.
IGI provides independent grading reports, colored stone reports, identification and appraisal reports, diamond authentication and attestations of origin, and laser inscription services. They also offers diamond and colored stone courses through IGI's Schools of Gemology. The IGI school was the first to offer the practical Rough Diamond course. [4]
Four games are in the books for Week 13 but there's still a lot of action to go in fantasy football. Here are players to start or sit this week.
3. Bojangles. Bojangles is a game of highs and lows. I hate some things (read: fries) and adore others (read: sweet potato pie) and the new nuggets, or, “Bo Bites” as they are called, really ...
The clarity grading system developed by the GIA has been used throughout the industry as well as by other diamond grading agencies including the American Gemological Society (AGS), and the International Gemological Institute (IGI). There are other smaller labs which use the GIA system as well.
2. The Italian Hero. There are few things as exciting or rewarding to unwrap than a big, East Coast-style Italian sub from an Italian deli.To me, the perfect Italian has the following: shredded ...
The GIA began grading cut on every grading report for round brilliant beginning in 2006 [26] based on their comprehensive study of 20,000 proportions with 70,000 observations of 2,000 diamonds. [citation needed] The single descriptive words are as follows: Excellent, Very Good, Good, Fair, and Poor. [25]
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