Nerd question re: Gollum in Chinese

Hi guys, I am trying to buy amusing gifts for some friends (read, my pub trivia team), and I find that I need to know: what is the preferred Chinese translation for "the precious"?

Our google fu has been weak (as is or net connection generally) and we are having to get the seals made earlier than I'd expected. Does anyone have any idea? If it helps, the pinyin for the two words suggested by our chinese dictionary for precious are zhengui and baogui.

This is time sensitive but also really not urgent. The worst case scenario is that I use a slightly less funny inside joke. Thanks in advance if anyone knows something! :)