Blue Sapphire (Neelam) is gemstone for Saturn. Saturn is the most effective planet among all planets in solar system, and it is considered most important as per astrology for its fast effect in extreme bad time of saade-saati (Saturn period). The gemstone is best for people of Capricorn zodiac sign (Makar Rashi) and Aquarius (Kumbha Rashi). Apart from that, anyone who wants to reduce the negative effects of saade-saati can wear blue Sapphire (Neelam). The main source of Blue Sapphire is Ceylon mines in Sri Lanka , Kashmir (Jammu) mines and Burma (Myanmar) mines.
Colour of actual stones may be lighter then below pictures,bcz this are high zoom close up pictures displayed below