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1. European Gemological Laboratory USA - EGL USA

EGL USA is one of the largest and oldest independent gemological institutions focusing on gemstone certification and research. Originally part of an international network founded in Europe in 1974, EGL USA opened its first U.S. lab in the heart of New York's international diamond and jewelry district in 1977.

In 1986 EGL USA became independently owned. Today the EGL USA Group has laboratories in New York City, Los Angeles, Vancouver, and Toronto. EGL USA is not affiliated with any other EGL labs outside North America.

In 1999 EGL USA initiated a Research Department to respond to the changing needs of the jewelry industry. It is one of only a few labs worldwide doing advanced research in gemology.


Certificates & Grading Reports

Diamond Reports

Full Page Documents

Mini-size Documents

Colored Gem / Pearl Reports

Full Page Documents

Mini-size Documents

Laser Inscription

Jewelry Webguard™ Certificate


EGL USA - New York

6 West 48th Street,

New York, NY10036

Phone: (212) 730-7380 | Fax: (212) 842-5180

Email Id: | Web Link:


EGL USA - Los Angeles

550 South Hill, Suite 840,

Los Angeles, CA90013

Phone: (877) 893-8593 | Fax: (213) 534-2224

Email Id: | Web Link:

 2. Gemological Institute of America – GIA

GIA is considered the world’s most trusted name in diamond grading and gemstone identification. Since 1931, GIA has been dedicated to ensuring the public trust in gems and jewelry by upholding the highest standards of integrity, academics, science, and professionalism. It is the corporate birthplace of the International Diamond Grading System™ and the creator of the famous 4Cs of diamond value – color, clarity, cut, and carat weight.

GIA’s D-to-Z color-grading scale and Flawless-to-I3 clarity-grading scale are recognized by gem and jewelry professionals everywhere. And, by extension, the GIA Diamond Grading Report, Diamond Dossier®, and Gemological Identification Report are considered the world’s premier gemological credentials.

With laboratories in New York, California, Bangkok, an additional research facility in Antwerp, 14 campuses, and more than 1,100 employees worldwide, the Institute’s diamond graders, researchers, and educators are regarded, collectively, as the world’s foremost authority in gemology. And together, they carry on GIA’s proud tradition of research, discovery, and education.


Certificates & Grading Reports

GIA Diamond Grading Report with Cut Grade

GIA Diamond Grading Report

GIA Diamond Dossier with Cut Grade

GIA Diamond Dossier

GIA Gem Identification Report


GIA - New York

 Laboratory Headquarters

 580 Fifth Avenue, Suite 200,

 New York, NY10036

 Phone: (212) 221-5858 | Fax: (212) 575-3095

 Email Id:

 Web Link:


 GIA - Carlsbad

 The Robert Mouawad Campus

 5345 Armada Drive,

 Carlsbad, CA92008

 Phone: (760) 603-4500 | Fax: (760) 603-1814

 Email Id:

 Web Link:




Numerous associations and organizations are working for the growth and development of jewelry industry. This section provides information on few of the leading jewelry associations formed by the jewelry professionals, jewelry retailers, jewelry manufacturers, volunteers and people interested in jewelry & gemstones.

Jewelry Associations

Accredited Gemologist Association – AGA

Founded in: 1974
Founded by: Antonio "Tony" Bonanno (as alumnae of the Gemmological Association of Great Britain)

Accredited Gemologist Association was envisioned as a network for sharing gemological information and skills. Aga is an international organization of all beliefs and cultures and shares a common bond of the love of gemstones. AGA believes in excellence and is dedicated to establishing the highest professional standards of practice. The AGA is an independent, international, nonprofit organization of degreed gemologists dedicated to advanced gemological education & research, identification & evaluation of gem materials and development of professional standards of analysis, practice & ethics.



G-Force Services

3315 Juanita Street,

San Diego, CA92105

Phone: (619) 501-5444

Email Id: |

Web Link:

American Gem Society – AGS

Founded in: 1934
Founded by: A select group of independent jewelers and Robert M. Shipley, founder of the prestigious school of gemology, the Gemological Institute of America (GIA)

American Gem Society was established with a vision to create an association dedicated to setting and maintaining the highest possible standards of business ethics and professionalism in the jewelry industry. Today, American Gem Society members continue their dedication to ethics, knowledge and consumer protection.

Only a small percentage of those who apply for membership in the American Gem Society are awarded membership. In order for a firm to become a member of the American Gem Society they must meet the certain criteria. The firm owners, principals or employees must have a high level of gemological knowledge and must demonstrate that they are genuinely interested in high business ethics and the firm exemplifies this belief. The firm must hold a reputation for unquestioned integrity in the business community and must be operated in a way that will enhance the confidence of the public in the jewelry industry. Also the firm must be a retail or supplier jewelry business that has been established for at least two years and has demonstrated financial stability.



8881 W. Sahara Avenue,

Las Vegas, NV89117

Phone: (702) 255-6500 | (866) 805-6500

Email Id: | Web Link:

American Gem Trade Association – AGTA


Founded in: 1981
Founded by: Leon Ritzler, Roland Naftule and Ray Zajicek

American Gem Trade Association represents the interests of the natural colored gemstone, pearl and cultured pearl industries in the United States and Canada. Additionally, the AGTA promotes, maintains and perpetuates the highest ethical standards and inter-industry communication among the Members of AGTA and within the colored gemstone industry.

AGTA also protects the natural colored gemstone, pearl and cultured pearl industries, related industries and ultimately, the consumer from fraud, abuse, misrepresentation and deceptive advertising related to colored gemstones. AGTA provides awareness, knowledge and educates natural colored gemstone industries, related industries and the consumer about natural colored gemstones, pearls and cultured pearls. The Association also hosts the annual trade show, AGTA GemFair Tucson and the AGTA Spectrum Awards design competition.



3030 LBJ Freeway, Suite 840,

Dallas, TX75234

Phone: (214) 742-4367 | (800) 972-1162 | Fax: (214) 742-7334

Email Id: | Web Link:

American Geological Institute – AGI


Founded in: 1948

American Geological Institute is a nonprofit federation of 44 scientific and professional associations that represent more than 120,000 geologists, geophysicists, and other earth scientists. AGI provides information services, serves as a voice of shared interests for its member societies and the geoscience community, plays a major role in strengthening geoscience education and strives to increase public understanding of the vital role the geosciences play in society's use of resources and interaction with the environment.



4220 King Street,

Alexandria, VA22302-1502

Phone: (703) 379-2480 | Fax: (703) 379-7563

Email Id: | Web Link:

Independent Jewelers Organization – IJO


Founded in: 1972

Independent Jewelers Organization is one of the largest buying groups in the world with over 850 members worldwide. IJO Members consistently meet the high standards of excellence, service and integrity required by the organization. IJO offers to consumers an opportunity to buy with confidence from a local jeweler behind the who will design, create, manufacture and stand behind the jewelry of your dreams, as well as offer the very best prices. IJO also focuses on continuing education for its members in both Gemology and industry trends as well as provides protection to consumers.



25 Seir Hill Road,

Norwalk, CT06850

Phone: (800) 624-9252 | (203) 846-4215 | Fax: (203) 846-8571

Email Id: | Web Link:

International Colored Gemstone Association – ICA


International Colored Gemstone Association is a nonprofit organization representing wholesalers, miners and cutters of colored gemstones from 46 countries. The association's goal is to foster international cooperation and communication in the international gemstone industry.



19 West 21st Street, Suite 705,

New York, NY10010-6805

Phone: (212) 620-0900 | Fax: (212) 352-9054

Email Id: | Web Link:

Jewelers Board of Trade – JBT


Founded in: 1885

Jewelers Board of Trade is dedicated to the welfare of its members and the jewelry industry overall, providing industry specific credit information, collections and marketing services. It also provides collection services and wholesale and retail jewelry mailing list/label information to its members. JBT is active in numerous trade shows and industry events and offers educational programs on relevant industry topics.



P.O. Box 6928,

Providence, RI02940

Phone: (401) 467-0055 | Fax: (401) 467-1199

Email Id: | Web Link:

Jewelers of America – JA


Founded in: 1906
Founded by: American Retail Jewelers Association and National Retail Jewelers Association formed together the American National Retail Jewelers Association (ANRJA)

Jewelers of America is among the oldest associations of retail jewelers in the United States. JA is the national trade association for retail jewelers and offers assistance to all its members in improving their business skills and profitability. JA provides access to meaningful educational programs and services, provides leadership in public and industry affairs and encourages its members with common interests to act in their and the industry's best interest.



52 Vanderbilt Ave, 19th Floor,

New York, NY10017

Phone: (646) 658-0246 | (800) 223-0673 | Fax: (646) 658-0256

Email Id: | Web Link:

Jewelers' Security Alliance – JSA


Founded in: 1883

Jewelers' Security Alliance is a non-profit crime-prevention association with 21,000 members that has been providing crime information and assistance to the jewelry industry and law enforcement since 1883. JSA gives information and alerts to jewelers and consumers about crimes in the jewelry industry. JSA provides electronic and print bulletins, a jewelry security manual, consulting advice, a Web site, and training seminars on how to reduce losses from burglary, robbery, and theft. JSA also works closely with the FBI and local law enforcement agencies, sharing its data and analysis in order to further the war on jewelry crime.



6 East 45th Street,

New York, NY10017

Phone: (800) 537-0067 | Fax: (212) 808-9168

Email Id: | Web Link:

Jewelers Vigilance Committee – JVC


Founded in: 1912
Founded by: The Good and Welfare Committee of the National Jewelers Board of Trade

Jewelers Vigilance Committee provides education and self-regulation to the jewelry industry. JVC promotes fair competition by maintaining the highest ethical principles by governing the jewelry industry, keeps trade informed of laws and regulations and monitors industry advertisements. The committee also fights unfair trade practices and helps prosecute violators of jewelry industry laws.



25 West 45th Street, Suite 1406,

New York, NY10036

Phone: (212) 997-2002 | Fax: (212) 997-9148

Email Id: | | Web Link:

Jewelry Information Center – JIC

Founded in: 1946

Jewelry Information Center (JIC) is the public relations arm of the fine jewelry and watch industries. JIC provides information to consumers about fine jewelry, savvy shopping tips, care and cleaning information, jewelry history and fashion trends through its work with print, broadcast and now, Internet media. JIC’s jewelry experts are on call to help educate consumers about fine jewelry. You may catch them on radio and television shows across the country in studio and via satellite talking about gift giving, trends and savvy shopping tips.



52 Vanderbilt Avenue, 19th Floor,

New York, NY10017

Phone: (646) 658-0240 | Fax: (646) 658-0245

Email Id: | Web Link:

Manufacturing Jewelers and Suppliers of America – MJSA

Founded in: 1903

Manufacturing Jewelers & Suppliers of America is a national trade association that delivers valuable information and opportunities to its members to help them operate more profitably. This is accomplished through MJSA trade shows; MJSA publications, including MJSA Journal, its flagship monthly magazine; the educational programs of the MJSA Jewelry Academy; and MJSA cost-saving benefits and other association resources.



45 Royal Little Drive,

Providence, RI02904

Phone: (401) 274-3840 | Fax: (401) 274-0265

Email Id: | Web Link:

National Association of Jewelry Appraisers – NAJA


Founded in: 1981

National Association of Jewelry Appraisers promotes professional standards and education in the field of jewelry appraising. Members include independent appraisers, jewelers, importers, brokers, and other professionally interested members. The association includes more than 700 Gem and Jewelry Appraisers. The NAJA conducts various programs designed to serve the interests of both its members and the public at large in matters relating to appraisal theory and valuation science. NAJA conducts two education conferences every year — February in Tucson during the AGTA GemFair and every first weekend in August at a rotating location.



P.O. Box 18,

Rego Park, NY11374-0018

Phone: (718) 896-1536 | Fax: (718) 997-9057

Email Id: | Web Link:

Platinum Guild International – PGI


Founded in: 1975

Platinum Guild International is an organization dedicated to inspiring a passion for platinum that ensures it is the precious jewelry of choice. PGI provides information, practical advice and expertise to help jewelry buyers make informed and inspired decisions. PGI also offers the jewelry trade specialist knowledge and resources, with the aim of providing customers a high level of help and advice in store. PGI provides sales support and training to all levels of the jewelry trade.



Email Id:

Web Link: (Trade site) | (Consumer site)

The Appraisal Foundation

Founded in: 1987
Founded by: Eight major Appraisal Societies in the United States

Appraisal Foundation, a not-for-profit educational organization dedicated to the advancement of professional valuation. Since its inception, the Foundation has worked to foster professionalism in appraising by:


The Appraisal Foundation

1155 15th Street NW, Suite 1111,

Washington, DC20005

Phone: (202) 347-7722 | Fax: (202) 347-7727

Email Id: | Web Link:

The Silver Institute

Founded in: 1971

Silver Institute is a nonprofit international association that draws its membership from across the breadth of the silver industry. This includes leading silver mining houses, refiners, bullion suppliers, manufacturers of silver products and wholesalers of silver investment products. The Institute serves as the industry's voice in increasing public understanding of the many uses and values of silver. The Silver Institute also promotes research, spread knowledge and helps in development of markets for silver and its products.


The Silver Institute

1200 G Street, NW Suite 800,

Washington, DC20005

Phone: (202) 835-0185 | Fax: (202) 835-0155

Email Id: | Web Link:

Women’s Jewelry Association – WJA


Founded in: 1983
Founded by: Toni Lyn, Cindy Geller, Linda Goldstein, Tina Segal, and Ronnie Lavin

Women’s Jewelry Association is the preeminent association of professional women in the jewelry, watch and related businesses. WJA offers educational programs and enhance communication, provides scholarships, conducts design competitions and recognition programs. WJA empowers women to achieve their highest goals in the international jewelry, watch and related businesses.


7000 W. Southwest Hwy., Suite 202

Chicago Ridge, IL60415

Phone: (708) 361-6266 | Fax: (708) 361-6166

Email Id: | Web Link:

World Gold Council – WGC


Founded in: 1987
Founded by: World's Leading Gold Mining Companies

World Gold Council, a commercially-driven marketing organization, is formed and funded by the world's leading gold mining companies. WGC promotes and maximizes the demand for gold in all its forms through marketing activities in major international markets.


444 Madison Avenue,

New York, NY10022

Phone: (212) 317-3800 | Fax: (212) 688-0410

Email Id: | Web Link:


Canadian Gemmological Association  

Canadian Gemmological Association | Setting the Nation Wide ...

Fellows of the Canadian Gemmological Association (FCGmA) are qualified gemmologists who have completed a rigorous set of standardized examinations ...