There are so many people who are interested in Navratna or Gem Stones as they consider it can change there fortune. Astrology states that to gain happiness and wealth and to have a peaceful and healthy life one should wear the gem stone associated with one’s Nakshatra. Each birth star or Nakshatra has a particular Navaratna associated with it. Heera or Vajram or Diamond is associated with Bharani, Purvaphalguni and Purvashadha Nakshatrams. These birth stars are also known as Barani, Puram and Pooradam in regional languages.Heera or Vajram is associated with Navgraha Shukra. This gem stone is also known by the name of White Saphire. It is believed that if the people born in Nakshatra Bharani, Purvaphalguni and Purvashadha wear the gem stone Heera they will be blessed with luck, prosperity and good health.