Aragonite

Aragonite has a hich calcium content and is believed to promote healthy skin, bone, and tissue formation, as well as healthy joints.  It's been said to strengthen the immune system, reduce hypersensitivity and prevent calcium deficiency.  It has a soothing effect on the holder's mood and promotes a peaceful way of life.  It can protect against sleep walking and nightmares when placed under ones pillow.  It removes social nervousness.  It symbolizes power and strength.  Yellow, pink, green, and brown aragonite are often called onyx.