The Jewel of Power is an object from Indiana Jones Adventure: Temple of the Forbidden Eye.
The Jewel of Power is a mystical jewel which is the mysterious power-source of the deity Mara. The temple seemed to give of a great amount of force and green glow with its true nature being unknown. The jewel was stored within the Temple of the Forbidden Eye in the Lost Delta of India, supposedly within a cavern behind the, "Gates of Doom".
The Jewel of Power was the power-source of the god Mara in the Temple of the Forbidden Eye. The jewel served as Mara's source of power and was supposedly stored past the temple's Gates of Doom. Those who dared gaze into the eyes of Mara would be dragged past the Gates of Doom to an unclear but likely deadly fate. Following a river-flood roughly around 65 BC, the temple of Mara would be left abandoned and in ruins.
In 1935, the temple would be excavated by Indiana Jones and Sallah Mohammed Faisel el-Kahir using a map from the Temple of Sherdil. On July 6 of 1936, while searching for the Jewel of Power within the Temple of the Forbidden Eye, Indiana would be lost within the ruins. Sallah contacted Indy's old mentor Abner Ravenwood who gave him information on the jewel's presumed location.
When a group of tourists sent into the temple by Sallah were dragged into the Gates of Doom, Indy saved them by holding the gates shut. Whether or not Indy had any success in finding the jewel remains a mystery though it is likely he did not.