Answer:
Precious stones in a pack of cards.
I'm a small ring shaped fried cake, often with bavarian cream or fruit filling, and sometimes covered in icing and sprinkles.
Women don't have and don't want it. Men get it but sometimes they try to get rid of it. What is it?
What kind of cup doesn't hold water?
Without what would everyone lose their head?
People take me on walks and I run and have fun. What am I?