It is the gemstone of Mercury and Birthstone of August. It works well for sun-signs like Simha (Leo), Mithun (Gemini), Kanya(Virgo), and Meen (Pisces) under Vedic Astrology and Cancer in the Western Zodiac. 

Weight:     Typically, the gemstone size should be approximately 1/10th of your body weight, that means 1 carat for every 10 kgs. Alternatively, it can be according to the strength required as per your horoscope or as advised by your astrologer.
Quality:    For the best astrological results, Burmese Peridots are considered best.
Metal:     Gold and Panchdhatu
Finger:     The left hand's little finger for women and right hand for men is our recommendation. 
Day:        Wednesday
Time:        Morning
Mantra:    Om Budhaya Namah or Om Budhha Devtaya Namah
 

Legend has it that it is an antidote to poison against snake and insect bites. It helps in anti-addiction, conquering enemies and winning court cases. It enables the wearer to have a  winning attitude.

Well Being:    Peridot, like the emerald, strengthens the heart, lungs, intestines, liver and gall bladder. It also gives better overall health by reducing stress and giving good sleep.         
Learning:     It improves understanding and memory and helps better decision making. 
Relationships: It helps build better relations as it enables you to understand your partner better. 
Protection:    It protects against the evil eye and boosts your emotional stability and mental strength. 
 

It is found in Burma, Australia, Egypt, Brazil, China, Kenya, Pakistan, Sri Lanka and Tanzania. In Egypt, the Peridot is called the gemstone of the sun. Natural Peridots are ideal for astrological reasons. Bright translucent olive green Peridots sans inclusions are premium. The iron content contributes to the olive-green colour that may vary in intensity. A Peridot marriage anniversary is when a couple completes 16 years together