How to calculate the second-hand price of Chengdu 50 cents diamond ring recycling? Where is Chengdu Diamond Ring Recycling Company?

There is a diamond recycling house in Kuanzhai Lane, which is good and can be found online. How to calculate the second-hand price of 50-cent diamond ring is generally based on the brand, style, market price, 4C, ring material, market popularity, usage, completeness of accessories and so on. You can find a spare diamond to evaluate.