Learn about the timeless beauty of rubies and styling tips as well as care advice to maintain the brilliance of your rubies.

The red light is reflected back, so that’s what you see in rubies. In an emerald, even though the chromium is surrounded by six oxygen ions, there is a weaker interaction between the chromium ...

Rubies appear red because they absorb blue and green light. benedek/E+ via Getty Images. Both rubies and emeralds are minerals, which is a type of rock with a consistent chemical composition and a ...