|Origin:||Nell gave it to Lana.|
|Color:||Initially green, but now clear.|
So much bad luck came out of it; there can only be good luck left.
|Lana to Whitney Fordman in the Pilot.|
Lana Lang owns a necklace made out of meteor rock from the 1989 meteor shower that killed her parents.
Her aunt and guardian Nell Potter made the necklace and gave it to her on the day Lana was officially adopted. She wore the necklace, "to remind herself of how much was lost that day."
The neutralized necklace.
Because Lana constantly wore her necklace for most of the first season, Clark Kent was almost never able to get within close physical proximity to her without feeling ill or stumbling and falling. His freshman year of high school, he realized his vulnerability to the meteor rocks and subsequently, Lana's necklace.
In season two, Tina Greer attacked Clark with the necklace, put it on him, and threw him in his storm cellar, also the location of Clark's spaceship. The ship sensed Clark's distress and emitted a burst of light that neutralized the necklace, turning it clear and harmless.