Hi. Welcome to English Forums.
The best way to get used to speaking and also writing fluently is to use correct punctuation. 
Yes, you can.
badgrammergrrl“ Who treasures you like I do?”
It's can be noun and verb.
Do you realize what kind of treasure you are?
Do you treasure your love?
There is also a proverb which is well known.
Cherish as the apple of one's eye.