Ang Singsing nang Dalagang Marmol ("The Ring of the Marble Maiden"), contemporarily rendered as Ang Singsing ng Dalagang Marmol in the Tagalog language, is a historical novel written by Filipino novelist, scholar, and labor leader Isabelo Florentino de los Reyes (also known as Isabelo de los Reyes, Sr.) before 1905. It is one of the first historical novels written in the Philippines during the first decade of the twentieth century (1900 to 1910). It was also one of the first novels during the period that was written using the technique of blending fact and fiction. Through the novel, De los Reyes revealed his knowledge of the actual events during the Philippine–American War, making the subject as "integral elements" of the book. Based on the original 1912 bookcover for the novel, Ang Sings