Gems     Resources > Gems
	Collection of hundreds of gem images including examples of agate, amber, azurite beryl, coral, cordierite, corundum, crysoberyl, feldspars, garnet, ivory, lapis lazuli malachite, olivine, opal, pearls, pyroxenes, quartz, rutile, spinel, tagua tanzanite, topaz, tourmaline, turquoise and zircon.	Introduction
A collection of essays providing information relating to the quality and properties of the semi-precious stone, amber. Answers questions on subjects such as amber's constitution and defines the different types in existence. Additional references are given, as well as a selection of images.	Introduction
Educational resource to promote the understanding, appreciation, and sale of gemstones worldwide. Gems and information pertaining to them, such as cut and location, are searchable alphabetically, by variety or by colour. Additional information is provided by articles on the likes of rare gems, how to judge the quality of gems and birthstones, and the symbolic meaning of various stones. French and German search facilities are provided.	Introduction
A non-commercial gallery of over 150 specimen images of rocks and minerals plus associated magazine.	Introduction
An Internet based course designed for students without a strong background in basic science. The primary goal of the course is to present some introductory earth science and to provide students with a solid understanding of gemology. It includes coverage of the processes leading to the formation of gems in the Earth, how gems are identified, factors that affect the appearance and value of gems, processes used to enhance their appearance, materials used to simulate common gemstones, and issues associated with the synthesis of gems.	Introduction
Searchable directory of substances, accessible by name, chemical group, colour, streak, hardness, crystal group, elemental affiliations, and Dana classification. Information returned for each entry covers chemical formula, composition, transparency, specific gravity, luster, popularity, and demand. Also includes a gallery of images and a glossary of related terms.	Introduction
Nonprofit educational, research, and gemological laboratory service with international representation aiming to provide accurate resources for the gem and jewellery industry. Includes information on distance learning, industry and consumer data from the GIA Gem Trade Laboratory, access to current and back issues of Gems and Gemology, as well as additional online publications, news, and events details.	Introduction
Information about gems and related events, with details of the Gemmological Association.	Introduction
Set of pictures of fluorescent minerals photographed under long wave or short wave ultraviolet light.	Introduction
Provides information on conflict diamonds, described as gems which originate from areas opposed to legitimate governments, and subsequently used to fund military operations against them. Describes steps being taken to halt such trade, and examines UN activity on conflict diamonds in Sierra Leone and Angola.	Introduction
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