Answer:
I contain six letters minus one and you got twelve.
I am a cave full of bones and the house of a worm.
I am higher than the king
What body part is pronounced as one letter, but written with three, only two different letters are used?
I am slim and tall many find me desirable and appealing they touch me and I give a false good feeling once I shine in splendor but only once and then no more for many I am to die for.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.