How to know if a diamond necklace is real?

There are a few things you can do to tell if a diamond necklace is real. First, look at the overall design of the piece. If it looks too good to be true, it probably is. Second, check the weight of the necklace. Real diamonds are very dense, so a necklace that is very light is likely not made with real diamonds. Finally, examine the individual stones closely. Real diamonds will have small imperfections on their surface, while fake diamonds will be perfect. If you're still not sure, take the necklace to a jeweler for an expert opinion.