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. Founded in

New York City New York, often called New York City (NYC), is the most populous city in the United States, located at the southern tip of New York State on one of the world's largest natural harbors. The city comprises five boroughs, each coextensive w ...

in 2005 by Mark Gershburg and Debbie Azar, GSI's laboratory division provides

diamond Diamond is a Allotropes of carbon, solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Diamond is tasteless, odourless, strong, brittle solid, colourless in pure form, a poor conductor of e ...

and

gemstone A gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, when cut or polished, is used to make jewellery, jewelry or other adornments. Certain Rock (geology), rocks (such ...

grading and identification services as well as gemological research, and a variety of educational programs for gemological professionals. GSI also acts as a resource of gem and

jewelry Jewellery (or jewelry in American English) consists of decorative items worn for personal adornment such as brooches, ring (jewellery), rings, necklaces, earrings, pendants, bracelets, and cufflinks. Jewellery may be attached to the body or the ...

information for trade press, global media organizations and the general public. GSI’s worldwide headquarters is located in

’s Diamond District. GSI has laboratories in

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

(

Mumbai Mumbai ( ; ), also known as Bombay ( ; its official name until 1995), is the capital city of the Indian state of Maharashtra. Mumbai is the financial capital and the most populous city proper of India with an estimated population of 12 ...

Surat Surat (Gujarati Language, Gujarati: ) is a city in the western Indian States and territories of India, state of Gujarat. The word Surat directly translates to ''face'' in Urdu, Gujarati language, Gujarati and Hindi. Located on the banks of t ...

and

Thrissur Thrissur (, ), Renaming of cities in India, formerly Trichur, also known by its historical name Thrissivaperur, is a city and the headquarters of the Thrissur district in Kerala, India. It is the List of most populous urban agglomerations in Ke ...

); the

Israel Israel, officially the State of Israel, is a country in West Asia. It Borders of Israel, shares borders with Lebanon to the north, Syria to the north-east, Jordan to the east, Egypt to the south-west, and the Mediterranean Sea to the west. Isr ...

(

Ramat Gan Ramat Gan (, ) is a city in the Tel Aviv District of Israel, located east of the municipality of Tel Aviv, and is part of the Gush Dan, Gush Dan metropolitan area. It is home to a Diamond Exchange District (one of the world's major diamond exch ...

);

UAE The United Arab Emirates (UAE), or simply the Emirates, is a country in West Asia, in the Middle East, at the eastern end of the Arabian Peninsula. It is a federal elective monarchy made up of seven emirates, with Abu Dhabi serving as i ...

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Dubai Dubai (Help:IPA/English, /duːˈbaɪ/ Help:Pronunciation respelling key, ''doo-BYE''; Modern Standard Arabic, Modern Standard Arabic: ; Emirati Arabic, Emirati Arabic: , Romanization of Arabic, romanized: Help:IPA/English, /diˈbej/) is the Lis ...

);

Belgium Belgium, officially the Kingdom of Belgium, is a country in Northwestern Europe. Situated in a coastal lowland region known as the Low Countries, it is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeas ...

(

Antwerp Antwerp (; ; ) is a City status in Belgium, city and a Municipalities of Belgium, municipality in the Flemish Region of Belgium. It is the capital and largest city of Antwerp Province, and the third-largest city in Belgium by area at , after ...

);

Botswana Botswana, officially the Republic of Botswana, is a landlocked country in Southern Africa. Botswana is topographically flat, with approximately 70 percent of its territory part of the Kalahari Desert. It is bordered by South Africa to the sou ...

(

Gaborone Gaborone ( , , ) is the Capital city, capital and List of cities in Botswana, largest city of Botswana, with a population of 246,325 based on the 2022 census, about 10% of the total population of Botswana. Its metropolitan area is home to 534, ...

); and

Hong Kong Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the wor ...

Gemological laboratory services

GSI Gemological Laboratory performs a number of services including: loose and mounted diamonds grading; origin testing of loose and mounted diamonds and gemstones; cut grade analysis; light analysis reports; gemstone identification; sorting and screening of melee; treatment identification; laser inscription on diamonds and gemstones; metal engraving; metal inspection; and 360-degree virtual imaging. GSI became the first gem lab to implement leading edge technologies to test all loose diamonds and gemstones for their origin. GSI offers different types of grading and identification reports, issued with differing formats, details, and prices. Each report includes educational materials to help consumers understand the information in the context of personal jewelry and diamond purchases.

Social responsibility

GSI participates in trade organizations including the Jewelers Security Alliance, Jewelers Vigilance Committee, Responsible Jewellery Council (RJC),

Dubai Multi Commodities Centre The Dubai Multi Commodities Centre (DMCC) is a commodities exchange and free-trade zone in the United Arab Emirates. It is located in the Jumeirah Lake Towers district of Dubai. The DMCC was created in 2002 and deals in four main sectors: prec ...

(DMCC), Israel Diamond Exchange (IDE), Jewelers for Children (JFC), Women’s Jewelry Association,

Bharat Diamond Bourse Bharat Diamond Bourse (BDB) is the world's largest diamond bourse (exchange) and is located in Mumbai, India. Spread over a plot, the complex is home to some 2,500 small and large diamond traders in addition to the Custom House, banks and other ...

, Antwerp Diamond Club and more. GSI helps to increase exposure for leading jewelry designers by sponsoring showcase events of their work. In May, 2018, GSI co-founder Debbie Azar was appointed to The Responsible Jewellery Council (RJC) Board of Directors.

References

External links

* {{authority control Gemological laboratories Research institutes in New York (state) Educational organizations based in the United States Organizations based in New York City