Alexis' Good Luck NecklaceEdit
During the Unicron Battles portion of the Mini-Con War, she claims that it brings good fortune and was the only thing that could keep them safe while they were trapped inside Unicron. Alexis fashioned it out of the jewelled stone Starscream brought back for her from Mars, and it was symbolic of her seeming crush/admiration of him. Mysteriously, the stone set within the necklace appears to be tied to Starscream's spark in some way, as it cracked when he was destroyed by Unicron.
How Alexis managed to fashion a complex piece of jewellery in deep space is also a mystery.
Téa's Good Luck NecklaceEdit
The rock Goku gives to Lyoko Warriors is eventually fashioned into a pendant by Téa. It was the only thing that could keep them safe during their hunt for the Black Star Dragon Balls. Mysteriously, this pendant has a deep connection with Blutz Waves in some way. Goku was fighting for the humans of Earth in a death-lock battle with the Tuffle King's descendant, Baby, on New Planet Plant. Goku absorbed Blutz Waves from Téa's necklace and was able to transform into a Golden Great Ape.