Life Fake diamond alert: If yours are simulated or made in a lab, you can’t call them mined May 28, 2019May 28, 2019 Zlati Meyer, USA TODAY Comments Off on Fake diamond alert: If yours are simulated or made in a lab, you can’t call them mined Diamonds are mined and if they're lab-created or synthetic, you have to say as much, the FTC is warning jewelers.