The gold coin was heavy in my palm as I pulled it out of my pocket. I studied it for a long time before getting up and slipping it in my bedside drawer.
She feels it is heavy or there is another meaning in heavy?
"Heavy" is being used literally to describe the weight of the coin. In this case, it has a relative meaning. Surely the coin is light enough to carry in a pocket and hold in his hand, but it is perhaps heavy compared to other coins.