...care is taken to point out that the diamonds glued to an anonymous human skull are "ethically sourced".
A: "Who's the skull?"
B: "We don't know. Some guy. It was lying about in a taxidermy shop since the 19th Century."
A: "Isn't that a little... wrong?"
B: "Well, the diamonds are ethically sourced!"
A: "Oh. Well that's okay, then."