The colors of rubies and emeralds are so striking that they define shades of red and green – ruby red and emerald green. But have you ever wondered how they get those colors? One feature of compounds ...

The birthstone for July is the ruby. The good news is that rubies are beautiful. The bad news is that they'll cost you a ...

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 ...

Crystals can be made artificially but a lot of energy is used to melt the ingredients together, and this can make them expensive. This problem can be overcome by using appropriate solvents. Called the ...