What is Stanleys second find?

In "Holes" by Louis Sachar, Stanley Yelnats' second find is a heart-shaped, gold-colored locket that contains a picture of a woman. This discovery, along with his first find of a fossilized lizard, plays a significant role in the story, as it connects Stanley to his family's history and the curse they believe has plagued them. The locket ultimately serves as a key to uncovering the deeper mysteries surrounding the characters and the land they are digging on.