Ruby has been associated with improved energy and concentration, creativity, loyalty, honor and compassion. Ruby is thought to be protective of home, possessions and family. Ruby is said to stimulate heart chakra and bring spiritual wisdom while shielding against psychic attacks.

A ruby is a pinkish red to blood-red colored gemstone, a variety of the mineral corundum (aluminium oxide). Ruby is one of the most popular traditional jewelry gems and is very durable. Ruby varieties of gem-quality corundum are called sapphires. Ruby is one of the traditional cardinal gems, alongside amethyst, sapphire, emerald, and diamond^. The word ruby comes from ruber, Latin for red. The color of a ruby is due to the element chromium.