The gem stones afford protection to their wearers from weaknesses malignant-influences of the planets placed in their birth charts. Gem stones are expensive; also there are less expensive semiprecious stones that can be used as effective substitutes. The rationale behind gem stones, and their medicinal utility, has been dealt with exhaustively. Guidance for appropriate gem stones for those who have no birth charts are also given. The book will help you and others in eradicating the set backs of life. Must study for Good Health, Happiness and Prosperity.