Discusses past efforts to make artificial gemstones, the different methods used to make them today, and possible applications for this technology. (Date of article: May 25, 2010)

This article discusses different varieties of quartz that are used as gemstones. A general description of each is given, including its historical background and physical makeup. This page is part of an excellent, detailed website about...

This site gives is an entry portal to information on gems and gemstones, including pictures of specimens and details on their physical properties and where they can be found.

Information on this commercial site gives the physical properties and origin of the amethyst, as well as some of the mythical and metaphysical properties ascribed to the gemstone.

This page contains information about the opal, including the gemstone's historical importance and physical properties.

This site contains information on the gemstone jade, including physical characteristics, historical significance, and where it is found.

An article on a commercial site describing the physical characteristics of this gemstone, along with its historical and metaphysical properties.

The beauty of carved gemstones has captivated craftsmen, collectors, and connoisseurs since antiquity. Precious markers of culture and status, gems were sought by Greek and Roman elites, and are still valued by modern monarchs and...

A gem is a precious or semiprecious stone that has been cut, polished, engraved, or otherwise altered to be used as a personal insignia for making sealings or as decoration. Often imported from afar, ancient gems were truly exotic, and...

This site from the Wikipedia encyclopedia gives a definition and information on hardness, value determination, and natural versus artificial rubies. Links are provided throughout for additional information on related subjects.

Contains general information on agate, including links to information about various varieties. Commercial site, good for pictures of varieties of agate.

A brief description of the physical properties of the aquamarine gemstone, along with a perspective on its history and metaphysical properties.

This encyclopedia article from Wikipedia provides a general overview of the gemstone topaz. Liinks are provided for additional information on related subjects.

Site contains information on sapphires, including its history, symbolism, and physical properties.

This commercial site gives a brief description of moonstone with pictures of finished stones.

This enormous, non-commercial site provides links to information on everything from the properties of gemstones and minerals, to tips on purchasing them, to mounting them for jewelry.

This thorough site covers the history of jade along with how jade is sold and used today.

Online exhibition site includes video demonstration of gem-carving techniques, side-by-side comparison of intaglios and cameos, and examples of gemstones carved by ancient Greeks, some of which have been set into jewelry.

Online exhibition site includes video demonstration of gem-carving techniques, side-by-side comparison of intaglios and cameos, and examples of gemstones carved by ancient Greeks, some of which have been set into jewelry.

Online exhibition site includes video demonstration of gem-carving techniques, side-by-side comparison of intaglios and cameos, and examples of gemstones carved by ancient Greeks, some of which have been set into jewelry.

Online exhibition site includes video demonstration of gem-carving techniques, side-by-side comparison of intaglios and cameos, and examples of gemstones carved by ancient Greeks, some of which have been set into jewelry.

Online exhibition site includes video demonstration of gem-carving techniques, side-by-side comparison of intaglios and cameos, and examples of gemstones carved by ancient Greeks, some of which have been set into jewelry.

This site gives information of the physical and chemical characteristics of all the different kinds of minerals in the garnet group.

Through this series of three lessons, students will gain an understanding of the basics of mineral science. In their investigation they will also work through the scientific process as they practice their observation skills, form...