The Healer's Miraculous Discovery by Stephen Robbins

Thirteen-year-old Stevie Katz likes to spend his days working in the family's store with his dad when he's not in school. As he's stocking shelves, he finds a mysterious object hidden in an unlikely place. He soon finds out that the object gives him the ability to heal the sick and wounded. Soon, his special powers lead him to see himself as an all-knowing, all-powerful being, and his ego leads him down a path of destruction. Set in Cleveland in the '60s, this thought-provoking story is part historical fiction and part science fiction.