Gems are part of Astrological remedies prescribed under Dharma Sastra. Some unscrupulous jewelers and quakes wrongly prescribe Gemstones for all and sundries. Stones should propitiate only benefic planets. Propitiating malefic planets may aggravate their negative qualities. It is also important to cleanse and energies the stones, before wearing, as per Vedic rites. An under energized stone is nothing but an ornamental article.