Amethyst (Jamunia)

It is substitute of Blue Sapphire .It is semiprecious Stone of Saturn.It can change native's luck from one extreme to another. Can rid all sickness. Saves in accident.It is worn on saturday in silver or iron in middle finger .
Source:- Brazil , India , Africa etc.
Mantra :- Oum Pram preem Praum sah Shanaicharay namah.