This is great, I want to go back a decade and relive an argument I had about this with a co-worker who was ring shopping for his now wife. I was trying to expl

This is great, I want to go back a decade and relive an argument I had about this with a co-worker who was ring shopping for his now wife. I was trying to explain to him that diamonds are worthless, they have little resale value because they're not fungible, the rarity is being manipulated, and man made diamonds are indistinguishable without a special tool. His position was that he can't get his fiance a "fake diamond" and I said just because it's man made doesn't mean that it isn't real. We went back and forth a bit, and started to get heated, and eventually I said "If I make a sandwich it doesn't mean it's not a real sandwich!" which made our other co-workers laugh hysterically and repeat for years. Ice would have made the point much better than a sandwich, but I suspect I wouldn't remember the story.