Blue sapphire or Nila (Neelam) is associated with the planet Saturn (Shani). Its benefits include attracting wealth, prosperity, good health, fortune, and moreover spiritual growth. It also keeps negative influences in check and brings discipline into your life by eliminating fear, procrastination and anxiety. Chemically, it primarily comprises of Aluminium Oxide (Al2O3),but its famous rich blue colour comes from trace elements of  Titanium and Iron which replaces certain Al3+ ions in the chemical lattice. Diamonds are considered to be the hardest amongst all gemstones, the blue sapphire comes as a close second when we speak about hardness quotient.