First, there’s the obvious question: are they real? To the naked eye, an artificial diamond is effectively identical to a real one. If your stones are loose, there’s one way of determining their authenticity: place them in a glass of water. Costume diamonds made of glass will float to the top, whereas real diamonds will sink.

Bear in mind that this is not completely foolproof, as cubic zirconia and some heavy glass diamonds might also sink. You can also try breathing onto the surface of the diamond and looking for any fog to form. Because diamonds insulate profoundly against heat, they will not fog up. If you do see fog, chances are good that the diamond is a substitute. However, there are other methods by which you can ascertain the composition of your gems. The easiest is, of course, to speak with an expert.

Our diamond buyer experts can assist you with a free appraisal of your jewelry or loose stones. They’ll be able to assess their clarity, color, cut, and carat weight. Using precision tools, they’ll ensure that your diamond is real and is not factory-made, either. Assuming that the diamond is real, they can also issue you a purchase price quote, allowing you to make a decision.

This process is this same whether or not you visit our NYC store or ship your diamonds to us via our secure carrier service. The same professional appraisers will evaluate your gems, and the same price quote will be available to you immediately.

They’ll answer any questions you might have and will assist you with shipping your valuables to us as needed. If you’re unsure about the authenticity of your diamonds, just ask! We’ll happily evaluate them for you for free. If they’re authentic, we’ll offer you cash for them immediately. We want to make it as easy as possible for you.