Manik Stone or Ruby Gemstone as it is called in English is a Precious Gemstone which is often seen in the Right Hand Ring Finger of both males and females. It is a very good ring stone as it does not get scratched easily. This is the Gemstone for Sun i.e., Surya. Wearing this stone strengthens Sun and makes the person have a better concentration of mind. We all know that a person with a good concentration and a long span of concentration is able to excel in whatever field of activity he is in. He can be a good player, student, administrator, actor and so on.