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https://www.indiamart.com/royalinstitute-diamond-grading/
Royal Institute Of Diamond Grading & Jewellery Designing B-205, Ashoka Supermarket, 2nd Floor, S. V. Road, Near Patkar College, Goregaon, Mumbai …
https://www.gia.edu/gem-lab-service/diamond-grading
Full 4Cs assessment with a plotted clarity diagram. For loose, natural D-to-Z color diamonds only, weighing 0.15 carats or more. Full 4Cs assessment with a plotted clarity diagram, geographic origin and GIA report number laser inscription. For loose, natural D-to-Z color diamonds only, weighing 0.15 ...
Established in 1931, GIA is an independent nonprofit that protects the gem and jewelry buying public through research, education and laboratory services.
https://www.facebook.com/Dftinstitute/
Deep fashion and tailoring institute, Goregaon, Maharashtra. 675 likes. Deep Fashion and tailoring institute DFT was established in the year 2014. With the aim of giving the students a platform in...Followers: 678
https://www.gia.edu/gems-gemology/spring-2015-gemnews-color-change-garnets-tanzania
Jul 26, 2021 · Jewelry Design & Technology Program ... Diamond Grading Lab Class ... (California Institute of Technology, Pasadena), San Diego gemologist Kirk Feral, and GIA. According to Wacks, the gems are approximately 80% pyrope, 10% spessartine, and 10% almandine, with an RI of 1.736. ...
https://www.gia.edu/gia-faq-grade-sapphires
GIA doesn’t grade or provide quality analysis for sapphire or other colored stones. GIA Gemological Identification Reports assess the characteristics of a stone (weight, measurements, shape, cutting style and color), determine if it is natural or laboratory-grown, indicate detectable treatments and, at the client’s requests, will issue an opinion on geographic origin, when possible.
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