As long as it is a formal business and not a barbaric operation, there will be no loss in cleaning.

It is recommended to go to a regular jewelry store to clean it with professional instruments, which is not expensive. If you are really busy, do it yourself at home. First pour a little detergent into the bowl, stir with warm water to foam, then put the diamond into the bowl and rub it gently with a soft brush. After brushing, take it out and put it into a metal net or filter tea set, rinse it with warm water and dry it with a soft cloth.