Unpolished gem: Jewel concert loses its luster

“Turn to me with frozen lips; Your hands are icy cold.” No, Jewel wasn’t describing the chilly conditions Friday night at the New World Music Theatre. Rather, she was singing a verse from “What’s Simple is True.” What’s true is simply this: With two hit albums (“Pieces of You” and “Spirit”), a best-selling poetry book (A Night Without Armor) and a leading role in Ang Lee’s coming film “Ride with the Devil,” Jewel’s ingenue days are over. Talented and lovely, she oozes telegenic charm in her music videos.