What is the main conflict in The Hare with Amber Eyes: A Family's Century of Art and Loss by Edmund de Waal?

"The Hare with the Amber Eyes," is a personal story but one that is teemed with history. The author, Edmund de Waal, is a member of the large and prominent Jewish Ephrussi family. Edmund shares his story about discovering the history of his family while in search of the history of a Japanese netsuke collection that was first purchased by a family member in Paris in the late 19th century.