Rocks are the basis of mankind's existence. Think about it--the caves our acestors lived in, the houses they built, the wells, the walls, the churches, the fortresses, the castles. Think of Plymouth Rock, of Petra, the city carved out of standing stone. Think of the old hymn "Rock of Ages," a religious analogy. We could not live without rocks.
Your Fiorella is such a rock lover that she cannot pass by a decorative pile of them in front of a store or restaurant without giving it a critical look-over for interesting specimens she could grab, much to Husband's embarrasment.
When Fio can figure out how to post a picture again, she'll show you the interesting rock she found in the load that vecina Kathy gave her for Easter. It has a glittering clam shell petrified into it.