Each month has a unique gemstone, that represents that month. These astrological birthstones are associated with that particular calendar months of the year and are supposed lucky to people, who were born in those months. Therefore, wearing the appropriate lucky birthstones is always considered to bring luck and prosperity in the life of wearers. These precious birthstones also have some therapeutic characteristics and power to ward off the ill-effects of planets. For better results, these astrological birthstones should be set in the right metal, with right weight and worn in the right finger.