Wikimedia
Wikipedia: Topaz
This encyclopedia article from Wikipedia provides a general overview of the gemstone topaz. Liinks are provided for additional information on related subjects.
Wikimedia
Wikipedia: Ruby (Gemstone)
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.
Other
Gem Hut: Agate (Chalcedony) Gemstones
Contains general information on agate, including links to information about various varieties. Commercial site, good for pictures of varieties of agate.
Other
Gem Hut: Zircon
This commercial page gives information about the physical properties of zircon, its appearance, and where it can be found. Includes pictures and tables.
Other
Gems Brokers: Zircon
Properties, myths, and facts of zircon are depicted in this commercial site.
Jewelry Central
Jewely Central: Garnet
This commercial site provides a brief description of the garnet, along with historical background on the gem.
Jewelry Central
Jewelry Central: Topaz
This commercial site contains information about the physical and metaphysical properties of topaz, along with where it is found. Discusses the different color variations, and how this gem is enhanced to make it blue.
Jewelry Central
Jewelry Central: Zircon
This commercial site contains information on zircon including its history, physical and metaphysical properties, and where it can be found.
Jewelry Central
Jewelry Central: Onyx
This page gives brief, general information on onyx, including its history, physical characteristics, and metaphysical properties. Commercial web site.
Jewelry Central
Jewelry Central: Agate
A commercial site that contains a brief paragraph about agates and photographs of some varieties.
Other
Gillett's Jewellers: Pearl Information
Pearl characteristics, differences between a cultured pearl and a shell-based pearl, and freshwater pearls are some of the topics featured on this page.
Other
Gem Hut: Sky Blue Topaz
A commercial site with a short description of the physical properties of topaz, and pictures of cut and polished stones for sale.
Curated OER
Ancient Carved Gems
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.
Curated OER
Youth Adjusting His Sandal / Epimenes
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.
Curated OER
Apollo / Solon
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.
Curated OER
Diomedes and the Palladion / Dioskourides
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.
Curated OER
Mark Antony / Gnaios
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.