All the diamonds you like to drill are real diamonds, and all the diamonds you like to drill have inspection certificates. You can check the authenticity of the diamond by the diamond number on the certificate. Hi Diamond is a brand owned by Hong Kong Xindafu Jewelry Company. It adopts online sales mode, and customers can customize rings online. Diamonds are lipophilic, so don't wear them when cooking. Oil fume easily covers the surface of diamond, making it lose its luster.