In the Hindu mythology it is mentioned that Satrajit is the son of Nighna. Vishnu Purana states that Satrajit was once walking along the sea-shore and he addressed to Surya or the Sun God. Satrajit also lauded some verses in praise of Surya. The divine Sun God appeared and stood before Satrajit in an indistinct shape. Satrajit said to the Sun God that he had believed the Sun to be globe of fire and requested Him to show his proper form. On this, the Sun, took off the jewel called Syamantaka out of his neck and placed it apart and Satrajit saw the real stature of Surya. The figure of Surya was of a dwarfish stature, and the body like burnished copper with slightly reddish eyes.

The Sun desired Satrajit to demand a boon; and Satrajit requested that the jewel might become his. The Sun presented it to him, and then resumed his place in the sky. Having obtained the spotless gem of gems, Satrajit wore it on his neck and, becomes as brilliant as the Sun. Satrajit then radiates himself all over the regions with his splendor, he returned to Dwaraka. Satrajit took back the jewel to his home. The magical jewel yielded daily eight loads of gold, and, through its marvelous virtue, dispelled all fear of portents, wild beasts, fire, robbers, and famine.

After some time, Prasena, the brother of Satrajit went out for hunting wearing the jewel but was killed by a lion. Then Jambavan, king of Bears killed the lion and gave the jewel to his son to play with it. When Prasena did not return, Satrajit wrongly blamed Krishna of killing Prasena for the sake of the jewel. Krishna did not steal the jewel and to prove that the accusation was incorrect he went in search of the jewel and found in the cave of Jambavan. Krishna took back the jewel from Jambavan and returned it to Satrajit.

Satrajit was ultimately killed by Satadhanwan in order to obtain possession of the jewel.