Ruby One of the most precious of gems, the ruby can easily be the equal of a diamond in value. In India and China the ruby is worn to promote health and happiness. A power ascribed to the ruby both in the Orient and Europe was the ability to foretell danger by a loss of color and brilliance. This stone is one of the earliest colored gems known to man. It is antitumor and antifat and good for reducing therapy.
Blue sapphire strengthens the bones, increases longevity and helps calm the nerves and emotions.
It gives energy and vitality and regulates the hormonal system. Emerald The Emerald has a great history, being held in high esteem by many cultures throughout history. Emeralds have been found in Egyptian and Etruscan archaeological sites. This is considered a stone with a spiritual emphasis. Cat's-eye is a good nervine stimulant and is helpful for mental disorders.