I'm sorry to say this, but there seems to be a mistake.
对不起,这儿好像有个错。
An open door may tempt a saint.
一扇开著的大门可诱惑一个圣徒。
My dear friend, Mathilde. Let me tell you something. That necklace you borrowed from me wasn't a real diamond necklace. It wasn't valuable at all. The stones in the necklace were made of glass. It was worth five hundred francs at the most.