How do you tell if Mikimoto pearls are authentic?

To tell if Mikimoto pearls are real, first examine the clasp. On authentic pieces, you will find the brand's M trademark logo. Comparing the stamp on your piece to images of the markings on real Mikimoto jewelry published on trusted online resources may allow you to identify inconsistencies that could indicate your jewelry is a replica. Besides the stamp, you should also see a marking corresponding to the metal purity, such as “18K” for gold or “S,” “SL,” “Sterling,” “Silver” or “950” for sterling silver. Pieces that lack purity stamps are unlikely to be authentic. The pearls themselves may also help you authenticate your jewelry. Mikimoto pearls will usually be perfectly round, lustrous and between 3 and 10 millimeters in diameter. If questions remain about the authenticity of your piece, use the services of a certified appraiser or other knowledgeable expert. Shop a selection of Mikimoto pearl jewelry on 1stDibs.