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About This Site

This website gives you the opportunity to explore the fascinating world of gems and jewelry. Whether you are planning to purchase a gemstone; an aspiring or established gem and jewelry professional; a scientist, hobbyist, retailer, trader or like so many others are simply intrigued by the world of gemology, you will find detailed, reliable information here.

明升体育app_明升体育-官网 (Gemological Institute of America) is a public benefit, nonprofit organization that conducts research and offers education and laboratory services to help protect the public by providing unbiased information about gems and jewelry.

Information on 明升体育app_明升体育-官网.edu
This website is a public resource, available to all who are interested in learning more about gems, gemology and 明升体育app_明升体育-官网. It includes articles, information and images that describe the nature and characteristics of gemstones, as well as related topics such as where gems are found and their history; market trends; and jewelry manufacturing design, and care.

Publically accessible information on the 明升体育app_明升体育-官网 website is provided as a record of documents and articles relating to 明升体育app_明升体育-官网’s activities, including gemological research, professional education, laboratory services and others. These materials were created at different times and locations for a variety of purposes; some materials and information have been superseded.

Article and information on this site may appear in multiple languages. For any article or other information published in translation, the meaning in the original language version is the authoritative text.

Using Information from 明升体育app_明升体育-官网.edu
Visitors to the website may use the information for personal purposes and/or provide a link to this website on another website as described in 明升体育app_明升体育-官网’s terms of use. The material on this website is copyrighted by 明升体育app_明升体育-官网; some may be copyrighted by others and is used by permission.

明升体育app_明升体育-官网 Endorsement Policy
明升体育app_明升体育-官网 does not buy or sell gems or jewelry commercially and does not endorse any type of gem or jewelry, any manufacturer or brand of jewelry, or any business or individual involved in the gem and jewelry industry. Individuals who are graduates of 明升体育app_明升体育-官网 educational programs and businesses that offer gemstones with 明升体育app_明升体育-官网 grading or identification reports or those that participate in the 明升体育app_明升体育-官网 retailer listing service may make factual statements about their credentials, reports or participation. 

Privacy Policy
明升体育app_明升体育-官网 respects your privacy. Privacy and data security are important to us. That is why when you visit our website, we attempt to help you maintain control over your personal information. By using this Site, you consent to the terms of the Privacy Policy. Should you not agree with or accept the terms of this Privacy Policy, do not utilize this site.

We collect information, including personal information, about you when you visit our Site and use our Services. We collect information that you provide us directly, from third parties, and automatically as described in the Privacy Policy.

System Requirements
This site is best viewed with:
  • Windows XP (or newer), Mac OS X
  • Internet Explorer 8+ (Windows Only), Firefox 32+, Safari 6+, Chrome 40+
  • Internet connection: 56.6 kbps modem or DSL, cable modem, ISDN, T-1 or other high-speed connection
  • Screen Resolution: 1024 x 768 or above
  • JavaScript must be enabled in the browser
  • Adobe Reader 9+ is required to read PDF documents