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 or NYC, is the most populous city in the United States. With a 2020 population of 8,804,190 distributed over , New York City is also the most densely populated major city in the Un ...

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

diamond Diamond is a solid form of the element carbon with its atoms arranged in a crystal structure called diamond cubic. Another solid form of carbon known as graphite is the chemically stable form of carbon at room temperature and pressure, ...

and gemstone grading and identification services as well as

gemological Gemology or gemmology is the science dealing with natural and artificial gemstone materials. It is a geoscience and a branch of mineralogy. Some jewelers (and many non-jewelers) are academically trained gemologists and are qualified to identify ...

research, and a variety of educational programs for gemological professionals. GSI also acts as a resource of

gem A gemstone (also called a fine gem, jewel, precious stone, or semiprecious stone) is a piece of mineral crystal which, in cut and polished form, is used to make jewelry or other adornments. However, certain rocks (such as lapis lazuli, opal, a ...

and

jewelry Jewellery ( UK) or jewelry ( U.S.) consists of decorative items worn for personal adornment, such as brooches, rings, necklaces, earrings, pendants, bracelets, and cufflinks. Jewellery may be attached to the body or the clothes. From a w ...

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 (Hindi: ), is a country in South Asia. It is the seventh-largest country by area, the second-most populous country, and the most populous democracy in the world. Bounded by the Indian Ocean on the so ...

(

Mumbai Mumbai (, ; also known as Bombay — List of renamed Indian cities and states#Maharashtra, the official name until 1995) is the capital city of the Indian States and union territories of India, state of Maharashtra and the ''de facto'' fin ...

, Surat and

Thrissur Thrissur (), 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 third largest urban agglomeration in Kerala after Kochi and Kozhikode, and t ...

); the

Israel Israel (; he, יִשְׂרָאֵל, ; ar, إِسْرَائِيل, ), officially the State of Israel ( he, מְדִינַת יִשְׂרָאֵל, label=none, translit=Medīnat Yīsrāʾēl; ), is a country in Western Asia. It is situated ...

(

Ramat Gan Ramat Gan ( he, רָמַת גַּן or , ) is a city in the Tel Aviv District of Israel, located east of the municipality of Tel Aviv and part of the Tel Aviv metropolitan area. It is home to one of the world's major diamond exchanges, and man ...

);

UAE The United Arab Emirates (UAE; ar, اَلْإِمَارَات الْعَرَبِيَة الْمُتَحِدَة ), or simply the Emirates ( ar, الِْإمَارَات ), is a country in Western Asia (The Middle East). It is located at th ...

(

Dubai Dubai (, ; ar, دبي, translit=Dubayy, , ) is the most populous city in the United Arab Emirates (UAE) and the capital of the Emirate of Dubai, the most populated of the 7 emirates of the United Arab Emirates.The Government and Politics of ...

);

Belgium Belgium, ; french: Belgique ; german: Belgien officially the Kingdom of Belgium, is a country in Northwestern Europe. The country is bordered by the Netherlands to the north, Germany to the east, Luxembourg to the southeast, France to th ...

( Antwerp);

Botswana Botswana (, ), officially the Republic of Botswana ( tn, Lefatshe la Botswana, label= Setswana, ), is a landlocked country in Southern Africa. Botswana is topographically flat, with approximately 70 percent of its territory being the Kalaha ...

(

Gaborone Gaborone ( , , ) is the capital and largest city of Botswana with a population of 246,325 based on the 2022 census, about 10% of the total population of Botswana. Its agglomeration is home to 421,907 inhabitants at the 2011 census. Gaboron ...

); and

Hong Kong Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China (abbr. Hong Kong SAR or HKSAR), is a city and special administrative region of China on the eastern Pearl River Delta i ...

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 Dubai Multi Commodities Centre (DMCC) is the UAE's largest free-trade zone that is located in the Jumeirah Lake Towers district of Dubai. Created in 2002, it serves as a commodities exchange that deals in four main sectors: precious commod ...

(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 20-acre plot, the complex is home to some 2,500 small and large diamond traders in addition to the Custom House, banks an ...

, 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