Material which partically turns into gradiental glass

Hello Blenders !

I am having trouble with a shape like this belowe linked :smiley:
I would like to have a something like gradient which turns from some material into a glass material
http://ompldr.org/vOWVsYw/2.png
:eyebrowlift2:
I appreciate any helping hand.
Cheersā€¦

use texture nodes