If your set is relatively new, then you should be able to scope out its authenticity based on the trademark and manufacturer name found on the underside of each item. But for older pieces with hard-to-read markings (bone china has been around since the 1800s and is traditionally passed down through generations), here’s how to test its authenticity: Hold a piece of bone china up to a light and place your hand behind it. If it’s real, you should be able to see your fingers through the translucent china. Can’t see a damn thing? Send Aunt Muriel a thank-you card anyway.