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Gemological Science International, or GSI, is an independent gemological organization that is one of the largest gemological entities in the world, with offices in four continents. [ 1 ] [ 2 ] [ 3 ]
Diamond World News Service. June 7, 2008 "Diamond Certificates And Its Importance In The Industry". April 19, 2022; Simon, Bernard (June 27, 2002). "Adding Brand Names To Nameless Stones". Diamond New York Times "International Gemological Institute". Europa Star. April 1, 2002
In 1953 the GIA developed its International Diamond Grading System and the "four Cs" (cut, clarity, color, and carat weight) as a standard to compare and evaluate the quality of diamonds. [ 2 ] As of 2024, the institute is headquartered in Carlsbad, California , and operates in 13 countries, with 11 campuses, 9 laboratories, and 4 research centers.
[111] [112] [113] Several international fashion models, including Iman, Lily Cole and Erin O'Connor, who were previously involved with advertising for the companies' diamonds, supported the campaign. [114] [115] De Beers sold one mine in Botswana to Gem Diamonds in 2007. [110]
Israel Diamond Exchange Ltd., located in the Tel Aviv District city of Ramat Gan, Israel, is the world's largest diamond exchange and the centre of Israel's diamond industry. The exchange is a private company that incorporates about 3100 members; these diamantaires are engaged in diamond cutting and trading - marketing, brokerage, import and ...
Lazare Kaplan International Inc. (LKI) is a diamond manufacturing and distribution company based in New York City. The Chairman of the Board of Directors is Maurice Tempelsman . The first LKI was located in Ponce, Puerto Rico , at el Barrio de los Diamantes , a community named after the factory was located there.
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]
Gemporia Lifestyle was launched on 8 July 2020, closing 20 February 2023 [2] and could be found as a segment on the Shopping Quarter service run by The Gemporia Partnership on Freeview channel 72 (which will become Freeview channel 73 on 26 January 2022) [3] from 5pm each night [4] The channel features presenters such as Hattie Greenwood, Kati ...