The extra-large crystals give 12 resistance IIRC. And at the end of my second game I had in my bag four extra-large bone crystals and one extra-large water crystal. That sure brought my bone-resistance up, you can believe me. <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />
As for pickpocket, your loss. <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" />