Answer:
I have thirteen hearts but no body or soul. What am I?
What has an eye but cannot see?
What is black when you buy it red when you use it and gray when you throw it away?
Lovely and round, I shine with pale light. Grown in the darkness, a lady's delight. What am I?
I am as hard as metal, yet as flimsy as glass. I shine like a star, yet I am only a rock. What am I?
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.