* Kino's loss of innocence and hope: The pearl, initially a symbol of hope and a way to secure his family's future, quickly becomes a catalyst for tragedy. It brings greed, violence, and ultimately, the death of Kino's son, Coyotito. This loss is particularly devastating because it represents the complete shattering of Kino's dreams and the innocence he once held.
* The death of Coyotito: This is undoubtedly one of the most impactful moments in the story. Coyotito's death is brutal and senseless, and it serves as a stark reminder of the destructive power of greed and the tragic consequences of the pearl.
* Kino's final, desperate act: In the end, Kino throws the pearl back into the sea, realizing its curse and the destruction it has brought. This act of letting go, while offering a glimmer of hope for the future, is also deeply sad. It highlights the loss and pain Kino has endured and the price he has paid for the pearl's allure.
Ultimately, the "saddest" part of "The Pearl" is subjective and depends on individual interpretation. However, the book leaves a lasting impression on the reader because of its tragic and thought-provoking exploration of themes like greed, poverty, and the corrupting influence of material possessions.