This encyclopedia article provides information about emeralds.

Wikipedia provides a general overview of the ornamental stone, the amethyst. Content includes a focus on its physical characteristics, history, and role in folklore.

This site has a concise definition of jasper along with pictures and connections to related sites.

This commercial site provides a brief description of the garnet, along with historical background on the gem.

This page gives brief, general information on onyx, including its history, physical characteristics, and metaphysical properties. Commercial web site.

A commercial site that contains a brief paragraph about agates and photographs of some varieties.

A detailed discussion of the physical properties of diamonds, including different forms of carbon, locations of origin, uses, color, and more. Informational and helpful concerning diamonds.

This resource provides general information on sapphire, including hardness, color, and uses.

This site has some background information on aquamarine, a blue form of beryl. Provides details about variety, uses, color, and more. Detailed and helpful information.

Features information about Colorado state symbols including the flag, the state seal, the state motto, the state animal, bird, insect and fish, the state tree, the state flower, the state song, and more. Provides numerous links to many...

Discover all of the Kentucky state symbols here, including a picture and the year of adoption.

A detailed description of amethyst, including its physical properties and the more noteworthy locations it is mined.

This site has some background information on aquamarine, a blue form of beryl. Provides details about variety, uses, color, and more. Detailed and helpful information.

A brief physical description of emeralds from an online database about minerals. Provides information about history, characteristics, color, and use.

This site gives a basic description and information on jade. Provides information about uses, color, hardness, and history.

This brief article has information on the physical characteristics of peridot and where it is found. Includes information about color, uses, and hardness, and provides pictures of the gem.

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.

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 on a commercial website contains information about the opal, including the gemstone's historical importance and physical properties.

This page on a commercial website 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.

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

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