Reduces anxiety and stress
Keeps one grounded 
Encourages loving compassion
Provides deep sense of energetic security
Physical bridge to the spiritual world
Blue- Strong communication crystal
Black- Brings strength and protection
Pink- Stimulates passion and drive
Green- Balances the emotional body
Watermelon- Balances energies
Found and mined in Brazil, Namibia, Sri Lanka, USA, Russia, Madagascar, and Africa