If a married woman is seen buying Mangalsutra in a dream, then it is a very auspicious sign. It means that you may get financial benefits or something good is going to happen in life.
Selling Mangalsutra in dream
Buying a mangalsutra is auspicious, but selling it in a dream is an inauspicious sign. If you see such a dream, you should be careful. According to dream science, this dream tells that your husband may cheat you.