The stone is miracle for people who are having problems in concentration. Especially this stone is a boon for students as it helps them to enhance intelligence.
Peridot is considered to be a substitute gemstone for Emerald. Peridot increases concentration and is very good for students and people doing Meditation.
Red Garnet is considered to be a substitute gemstone for Ruby. It is ruled by Sun and is worn to make the Sun strong in the horoscope as it draws inspiration from Sun.