There are not many books on gems. The author, in this book has done a yeoman service both to the gems and to their wearers. Gems are bestowed with divine powers. They can perform miracles if worn in a proper way. This book provides you accurate knowledge about the use of right stone at suspicious time in a right way. The learned author has given details about composition, constituents, chemical properties and medicinal use of gems in this small but very useful book. Herein you will get information about precious, semi precious and inexpensive gems, their sources and formation, their correspondence with planets, their powers to protect from malignant influences of planets and warning about coming danger. In this book you will get very useful information about artificial gems and test of genuine gems. It is equally useful for gem-wearers, astrologers and those who deal in gems. The love of precious stones is deeply implanted in the human heart and the cause of this must be sought not only in their colouring and brilliancy but also in their durability. The sheen and colouration of precious stones are the same today as they were thousands of years ago and will be for thousand of years to come. In a world of change the permanence has a charm of its own that was early appreciated. The influence exerted by precious stones was assumed in medieval times without question. Auto suggestion may also afford an explanation that is mysterious in the effects attributed to precious stones, for if the wearer be firmly convinced that the gem he is wearing produces certain results, this conviction will impress itself upon his thought and hence upon his very organism. He will really experience the influence, and the effects will manifest themselves just as powerfully as though they were caused by vibrations or emanations from the material body of the stones.