Other
Learn to Program (With Ruby)
A beginner's guide to computer programming using the Ruby programming language.
Other
Swiss Gem Shop: Ruby
This is a commercial site, but it has some very good complete information and pictures. You must search for "ruby" in the alphabetized list on the left toolbar.
Jewelry Central
Jewelry Central: Ruby
This commercial site gives information on rubies, including their physical properties and where they are found. Includes some details on how to choose a ruby for purchase.
Jewelry Central
Jewelry Central: Gemstones
This commercial site contains general information on various synthetic and natural gemstones and provides links to specific gems.
Amethyst Galleries
Amethyst Galleries: Mineral Gallery: Ruby
This site gives general information about the gem, ruby. Also included is information about hardness, color, uses, and other physical characteristics
Amethyst Galleries
Amethyst Galleries: Physical Characteristics of Minerals
The properties of minerals are defined in this resource, such as color, luster, cleavage, hardness, streak, and more. Included are pictures of minerals along with detailed descriptions. You can also search for minerals by name, class, or...
Other
International Colored Gemstone Association: Ruby
Site provides many facts about rubies, including properties and where rubies are found. Also provides further information and pictures of the gem itself.
Burke Museum
Burke Museum: Birthstones: Myths and History
As part of the Burke Museum's site on Geology, this page details the birthstones for each month and discusses both the myth and the history behind birthstones.
Wikimedia
Wikipedia: Ruby Programming Language
A Wikipedia description of the Ruby programming language.
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.
Curated OER
Rubies
This commercial site gives information on rubies, including their physical properties and where they are found. Includes some details on how to choose a ruby for purchase.
Curated OER
Ruby
This commercial site gives information on rubies, including their physical properties and where they are found. Includes some details on how to choose a ruby for purchase.
Curated OER
Science Kids: Science Images: Ruby
An attractive photo of an expertly cut ruby. This is an expensive kind of rock that is not commonly found. Set against a white background this ruby stands out, shining brightly as it reflects the light in a number of directions.