This gem has one of my favorite styles from Rich, the lined glass pod sitting there on top of the imploded flower. So cool, but it also has a bonus glass feature! The stem is made with a CFL (compact fluorescent light) reactive glass, and it will change from the yellow color you see in the pics to a nice pink color under fluorescent lighting. So, you've got an extra way to play with glass and light as you spin this incredible piece! The top is signed "RC II 5/18 'CFL'" in ti pen on the bottom.