How to tell if pearls, diamonds, and gemstones are real Now that you’ve checked the metal, it’s time to see whether the pearls, diamonds, and/or gemstones on a piece of jewelry are real.

Below, we ask two jewelry experts for their best tips on how to tell if pearls are real. Stephanie Lawler is the vice president of Merchandising at Signet Jewelers. Mallory Whitten is owner of MRW ...