create a 16k resolution, and realistic scaley dragon egg, the top of it is cracked open and jagged, with a rainbow drago

create a 16k resolution, and realistic scaley dragon egg, the top of it is cracked open and jagged, with a rainbow dragon peeking out of the top of the egg, it gives off a rainbow glow all around the top of the egg, the rest of the image is dark and dimly lit as if it were in a cave