Cut Glass: Jewels - Diamond

Forget everything you think you know about mass murderers and crimes of passion, because now you're going to learn the truth. People don't decide one day to go out and kill as many people as they can, or wake up one morning, grab the nearest shotgun or axe, and proceed to hack apart their loved ones. They do it because they're infected with a jewel, a creature of intense beauty and danger. Once the jewel takes over a host's body, that person dies, leaving the jewel in total control to thriv...