- Robert Stone: Without any warning at all, the door closed on me. I shouted and finally...
- Milo March: You say you've known him for a long time?
- Robert Stone: Yes, he's been doing our books for fifteen years at least. The quietest, nicest fellow you could meet. He came here about once in two weeks. Carter and I used to look at the stone together. We used to stand here, just looking.
- Franklin: Hand in hand?
- Robert Stone: Mr. March, you know anything about diamonds?
- Milo March: Yeah, I know I can't afford them.
- Robert Stone: Then let me ask you; have you ever seen something that became an obsession, something you simply had to possess?
- Milo March: Aha. But she ran away with a Texas oil man.
- Robert Stone: Well, Carter in a sense, eloped with the diamond. I don't condone him stealing it, mind you. But I can understand why he did it. He took it because he fell in love with it.
- Franklin: It's like stealing another man's wife.
- Milo March: Oh, come on now. What can a diamond do for you on a cold night?
- Robert Stone: If you're lucky enough to find The Tyrahna Blue, you'll know what I mean. You see, Mr. March, every man is actually two men: the one the world sees, the other the man inside.
- Milo March: You think that I'll steal it?
- Robert Stone: [chuckles] No, course not, Mr March. But the idea may cross your mind. A diamond like The Tyrahna Blue is like a beautiful woman - irresistible. A fire with passion.