At Least I Think It's Real

I asked Andrew to very carefully take my diamond earrings in the house today when I realized I was still wearing them as I was about to mow.

He held them up and said, "Wow!  I've never seen a real diamond!"

I said, "You goose - you've seen my wedding ring and it's real diamonds."

He looked shocked and replied, "I didn't know that was real diamonds.  I didn't think Dad would buy you a real diamond!"