Ruby is a red variety of corundum. Sapphire, the other gemstone variety of corundum, encompasses all colors besides red. In essence, ruby is a red sapphire, since ruby and sapphire are identical in all properties except for color.

If you really want to know more about rubies, ruby jewelry, and the ruby industry in general, be sure and check out some of these pages and links.

You can learn about rubies, ruby history, famous rubies, and more. In addition, there are links to books on rubies for the ruby enthuiast!