According to Vedic Astrology Blue Sapphire represents the planet Saturn [ Shani Deva  ].

It’s a very effective Gemstone. 

People who is suffering from shani pida according to there Horoscope or Palmistry, those people have to wear this stone in the guidance of an Astrologer.

It is very effective to cure Orthopedic problems, Money Crisis, its also helps to get good job and promotion.