2. Breathing test method: Breathe into the diamond ring. If the water vapor on the diamond ring disappears immediately, it is a real diamond ring. If the water vapor stays on the diamond ring for a few seconds and disappears, it is an imitation. If you don't trust these methods, you can take the certificate of diamond ring to the jewelry store to find someone to look at. Before, my husband customized one for me in the form of real-name registration system in Levi official website, which means "in my name, I will crown you with ten fingers and accompany you for life." The diamond ring with relevant certificates is guaranteed to be genuine, so don't worry. A diamond ring with a certificate is guaranteed!