First of all, precious metals themselves have extremely high investment value. In addition, the number of diamonds is extremely rare, the working process is very complicated, and the subsequent storage is insufficient. All these factors lead to the high investment value of diamonds, so some diamond rings can be preserved. However, if you want to invest, you still need to understand the conditions for maintaining the value of the diamond ring, otherwise it will be bad if you can't keep the value of the diamond ring.