Surya Manika: Code: ASI 12 This is made of copper which is considered to be a pious metal and a Manikya (Ruby) fixed firmly and mantra of Surya is inscribed on the copper part. This pendant improves general constitution as Surya (Sun) is the karka of life and Skelton system. This also improves concentration and gives fame and credibility to the wearer. Ruby is worn for special effect by people who crave for a special position in life.