No locks, no keys, no hinges, no lid....yet inside golden treasure is hid ? What am i ?

Who is this girl i dont even know ? whose email is Lets get f*****d up, im feeling u, i like yer style, i appreciate your strength and Heart, i bet u have a great mind, anyway w/o delay check out what i have 2 say ( that rhymes ! ) i have a ques. for u.... a riddle sweetheart.....No locks, no keys, no hinges, no lid,....... yet inside golden treasure is hid. What am i ? nedsj@yahoo.com