It was a small, waxy but smooth, pale yellow stone found only on Lorien 's first moon. When charged by a member of the Garde it turns a darker shade of yellow and when passed to another Garde, Legacies can be transferred for a period of around an hour. When Number Six parts with Number Four and Sam to travel to Spain, she charges the stone which allows Four to use her invisibility in order to sneak into the Mogadorian mountain base undetected.