(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Daniel Freedman, University of Wisconsin-Stout (THE CONVERSATION) The colors of rubies ...

Rubies are rare gems that are a form of corundum. People associate rubies with the color red, but depending on their exact elemental content, rubies may appear pink, as well. Gemstone Education ...

"If you look at a top-quality, gem quality ruby versus the top quality of a diamond – let's say they're five carats each – the ruby is going to be much rarer and much more expensive than that ...

The ruby is known as the king of gemstones, symbolizing passion, love and strength. It's no wonder people pay big bucks to buy ruby rings and other jewelry, but are you always getting genuine rubies?

Daniel Freedman does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...