Tanushree Dutta was in Calcutta recently to unveil Dyuti Diamond Jewellery.s latest diamond collection. Dressed in a hot black number, the actress arrived fashionably late.Talking about the collection, she stated that she was partial to Calcutta because that.s where she comes from. And of course she had to say that diamonds are a girl.s best friend! The jewellery collection includes rings, neckpieces and wristlets. After the event, Tanushree also signed some autographs as well.