Among auspicious gemstones DIAMOND (Heera) will be favourable for you. You may take 1/4 to 1/2 Ratti of Diamond in a ring of Gold or Platinum which should be worn on right hand ring finger on a Friday. Cheaper substitutes of Diamond are White Coral or Zircon which can be taken instead in a ring of Gold. While wearing the gemstone reciting the following 'Mantra' will be auspicious: Himakunda Mrinalabham Daityam Paramam Gurum Sarva Shashtra Pravaktaram Bhargavam Pranamyaham. The weights of gemstones recommended above are for adult male people. For adult females the weights should be reduced to 3/4 to 1/2 part while for the children the weights should be reduced to 1/2 to 1/3 part.