What is the significance of the ankh ring in Susann's "Love Machine"?

[T]he ankh [is] an Egyptian symbol of life, which Jackie made the motif of The Love Machine. She first saw it on Janet Leigh, wearing it in the form of a ring at a party. Janet Leigh gave the ring to Jackie, who had her jeweler make it up into necklaces. She has presented these large gold crosses with a loop on top to John Lennon, the Beatle; to Muriel Slatkin, daughter of the owner of the Beverly Hills Hotel; and, among others, to me. On television, Jackie likes to describe how Cleopatra carried the ankh as a symbol of eternal sex. But it is not Cleopatra of the Nile she conjures up; it is Cleopatra of Twentieth Century Fox.