Answer:
Fred and Wilma's child, named after a stone.
i am 4 times as old as my daughter in 20 years time i shall be twice as old as her how old are we now
Shorter than my four siblings, but easily the strongest, Sometimes I wear a funny hat.
A locked sphere without hinges or key. Break me open and golden treasures you'll see
Snow White was friendly with seven of them
What is it that makes tears without sorrow. And takes its journey to heaven?
Kids
Animal
Difficult
Easy
Food
Funny
Logic
What am I?