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Graduate Colored Stones (GCS) Graduate Pearls (GP) Applied Jewelry Professional (AJP) GIA also exists to educate the gem and jewelry industry and the general public through its publications and outreach efforts. Most notable of these efforts is the quarterly publication of the magazine Gems & Gemology, a respected journal in the field. The ...
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. [7] Graduates from the IGI school of Gemology are awarded an IGI Diploma.
Gem Testing Laboratory, Jaipur: This is a coloured gemstone centre in Jaipur. It grades and certifies all kinds of stones, its speciality is in coloured gemstones. Indian Gemological Institute, New Delhi: The Institute is located in New Delhi, IGI serves the gem testing and certification requirements of the industry in North India. [20] [21]
The Gem Testing Laboratory was recognized by the International apex organization of Gem and Jewellery Trade, CIBJO. With increasing consumer awareness, the jewellery industry worldwide began to issue certifications to attest the quality of gem and diamond products. The GII started diamond certification in India in 2000. . [1]
In 2017, SSEF became the first gem lab in the world to introduce radiocarbon age dating of pearls as a service to clients. [8] In 2020, SSEF and University of Zürich researchers unveiled a new methodology (published in the journal Scientific Reports [ 9 ] ) to extract DNA from precious coral samples and thereby identify the species of samples.
Gem identification is basically a process of elimination. Gemstones of similar color undergo non-destructive optical testing until there is only one possible identity. Any single test is nearly always only indicative. For example: The specific gravity of ruby is 4.00, glass is 3.15–4.20, and cubic zirconia is 5.6–5.9 . So one can easily ...
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It is a member of the Thai Gem and Jewelry Traders Association (TGJTA), and the International Colored Gemstone Association (ICA). The AIGS Gem Laboratory is very well known for its expertise in colored gemstones, [ citation needed ] especially ruby, sapphire , emerald , jade and rare stones, but it also provides identification and grading ...