Finished reading The Moonstone (1868) by Wilkie Collins a novel about a yellow diamond that adorns the statue of the Hindu God of the Moon. A British army officer while in India steals the gem, killing the Hindu priests guarding it. One of the priests warns the soldier he will pay for his crime. The soldier takes the gem to England and it turns out the diamond is a curse and then it goes missing. The Moonstone has been called the first British Detective novel. It's long but I enjoyed it