Rudraksha:

            Rudraksha, also called rudraksha ratana, rudraksha bead, rudraksha gem is a very sacred object in the Hindu religion. It is hard and dark colored fruit of a tree whose  botanical or scientific name is elaeocarpus ganitrus. In sanskrit Rudraksha mean eyes (tears) of Lord Shiva.  'Rudra' is another name of Lord Shiva and 'Aksha' means eyes or tears. The name  rudraksha also signifies “under the protection of Lord Rudra (Shiva).” The origin of Rudraksha is linked with the story of Tripurasura Samhara. 

Purana story:

             There was a very powerful demon called Maya. He built three towns of three different metals viz. gold, silver and iron.  These towns were imperishable and were called Tripur. So the demon was also known as Tripurasur. He became arrogant and started troubling gods and sages. Brahma and Vishnu expressed their inability to tame the demon. Then the gods prayed to Lord Shiva to protect them from the demon. Lord Shiva decided to kill the demon. He entered into a deep state of meditation with half-closed eyes.  Thereafter, he used a fire weapon called Aaghor to kill Tripurasur. The weapon killed the demon, but temporarily blinded Shiva too due to its dazzling brilliance. 

              When Lord Shiva opened his eyes, tears came out that ran down his cheek and fell on earth. Since nothing holy is ever wasted, the tears turned into seeds and grew up as Rudraksha Trees. The three eyes of Lord Shiva represent The Sun, the Moon and the Fire. From the sun-eye (the right eye) twelve types of Rudrakshas originated and from the moon-eye (left eye) sixteen types of Rudrakshas originated. From the fire-eye (in his forehead) ten types of Rudrakshas originated. Those born of the tears from the sun-eye are red blood in colour; those from the moon-eye are white Rudrakshas, and from the fire-eye are black Rudrakshas. So there are 38 (thirty eight) types of rudrakshas in all. The rudrakshas trees now grow in a very few  places in the world in the Himalayan regions like Nepal.  

Magnetic Power in Rudraksha

            Scientific studies on the properties of Rudraksha have revealed its high inherent Magnetic power. Further studies on this showed this magnetic power is of three types, they are Diamagnetic, Paramagnetic and Ferromagnetic. Studies showed, in 2 mukha (face) and 4 mukha rudraksha, the magnetic power is diamagnetic. 1, 3, 5, 7 mukha Rudrakshas have Paramagnetic power and in 6, 8 to 14 mukha Rudrakshas, the magnetic property is Ferromagnetic. Its Sensitivity and Magnetic property deviates according to the molecular structure of Rudraksha. Studies revealed that a Rudraksha placed in an unequal magnetic field, according to its face, its weight increases and decreases.

Radiating positive energy:

                Every substance on earth have a capability to store energy. when we come in contact, it may affect us either positively or negatively according to their energy radiating characteristics. We all know salt is an unavoidable substance in our life, but overusage of salt with affect us negatively since it radiates more negative energy. Sri K P C Anujan Bhattathirippadu, who is very famous in Kerala by conducting studies and classes about the energy properties of different substances. He uses a special type of instrument known as "Hartmann's Dousing Rods" to examine the Energy radiating power of various substances. He has said that Rudraksha is the most powerful among the substances which can create Positive Energy.

Uses: 

       In Hindu scriptures, Rudraksha beads (also called rudraksha ratna) are considered to be the holiest object having mystical powers.  They are used for spiritual and material gains and well-being for the wearer. Rudrakshas greatly help in attaining best results with chanting of mantras and meditation. They are useful in awakening Kundalini (as per the Hindu Science of Yoga).help in getting rid of all sins, help to attain perfect spiritual knowledge, Protect against accidents and bad happenings, reduce evil or negative influence of planets and black magic Basically, they are worn for self-empowerment. They are also used for  medicinal purposes like Regulate Blood pressure, help to control stress, reduce anxiety and depression, increase concentration, fertility,Relief in brain disorders and psychological maladies since ancient times. Saints, Sadhus, Yogis, Priests often wear rudrakshas beads. The effect of rudraksha is felt within 40 days after wearing it.