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GSI’s international gemological laboratory also offers an unmatched variety of products and services. GSI does it all, from basic diamond grading services to the most sophisticated testing and examination using advanced instruments.
https://www.diamonds.pro/education/gsi-certification/
Jan 18, 2021 · GSI primarily grades diamonds for large chain stores, and their service is usually speedy. With locations all over the world, GSI provides gemstone identification as well as grading and appraisal services in the fine jewelry industry. Overall, like EGL …
https://gemscience.net/services-and-reports/grading-reports/
GSI Diamond Grading Reports Gemological Science International offers a number of reports to meet customer needs. GSI diamond grading reports and colored stone grading reports vary in the amount of information provided, formats, sizes, and layouts. All GSI grading reports (often called “GSI Certificates”) are available online in PDF format.
https://beyond4cs.com/grading/gsi-diamond-certification-report/
Sep 06, 2020 · GSI lab is a recently established and independent laboratory that offers gemstone identification, appraisals and diamond grading services. Their head office of GSI is located in New York City and they have global operations spanning across 7 countries: the United States, India, Dubai, Israel, Belgium, Hong Kong, and Botswana.
https://instoremag.com/gsi-diamonds-screening-and-detection-service-and-more-service-news-for-july/
Jun 30, 2021 · Gemological Science International (GSI) is now offering a new screening and detection service to discover natural diamonds hidden in lab-grown diamond jewelry. The new service is GSI’s answer to the lab’s recent discovery of an emerging pattern of “undisclosed” natural diamond melee mixed with lab-grown diamonds in jewelry. gemscience.net
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