RUBY
Sign of the zodiac: Leo, Scorpio, Cancer, Sagittarius
Chakra for which this gemstone is intended: Forth Chakra, Heart
Composition: Ruby is a type of corundum, aluminium oxide with chromium, Al2O3:Cr
Hardness: 9
Metaphysical Properties: Love, purity, spiritual wisdom, knowledge, wealth. Amplifies energy. Protective.