RUBY CHARACTERISTICS Origin of the name: From the Latin “rubeus” which means “red”. Chemical Composition: Aluminum oxide, Al2O3. Group of origin: Corundum Crystal system: Rhombohedral Hardness: 9 Deposits: Burma, Sri Lanka, Tanzania, Thailand and Vietnam. Color(s): Pale red, “pigeon blood” red, violet and magenta. History and Legends: Lithotherapy Properties: Physical Properties: Signs of the zodiac: Chinese signs: Chakra: